build: Rework patch mechanism for Fuel submodules

While refactoring the patching mechanism, take care of:
- Sync submodule handling with Fuel@OPFNV;
- build: Investigate/prepare for moving patches to Fuel@OPNFV;
- build: Investigate divergent fuel-mirror;
- ISO build: cacheid for Fuel comps should not depend on
  Armband git commit;

CHANGE:
 Rename/shuffle patches while grouping them in "features",
 preparing for upstreaming them to Fuel@OPNFV and beyond.

CHANGE:
 Allow linking patches for better representing the dependency
 between one patch and different features.
 e.g. 0001-Add-arch-to-nailgun-release-and-target-image.patch:
   - part of `multiarch-fuel`, because it extends Fuel;
   - part of `direct-kernel-boot`, as arch is required for that;
   - part of `cross-bootstrap`, target image is arch-dependent;
 NOTE: Patch links are not staged to Fuel@OPNFV, they only serve
 as markers that a specific patch is part of a feature.

CHANGE:
 Kill all Fuel component submodules, now handled in Fuel@OPNFV:
  - fuel-agent
  - fuel-astute
  - fuel-library
  - fuel-mirror
  - fuel-nailgun-agent
  - fuel-web

CHANGE:
 Move armband-fuel-config.mk to armband git root.

FIXME: m1.micro-Increase-profile-RAM-size-to-128MB.patch is NOT
 part of `cross-bootstrap` feature, but patch context says so ...

FIXME: 0001-Add-arm64-deb-repositories-setup.patch is broken at
 `make patches-export` by removing spaces at EOL.

v2 -> v3:
 * Phony patch support (links to show a patch belongs to a feature);
 * Updated README.md
v3 -> v7:
 * Re-export Fuel submodules & plugins patches (update patch context);
 * Update Cavium mail addresses (s/caviumnetworks.com/cavium.com/);
 * Ignore submodule changes;
 * Add armband git repo info to gitinfo_fuel.txt at build time;

Implements: ARMBAND-136
Closes-bug: ARMBAND-95
Closes-bug: ARMBAND-93
Closes-bug: ARMBAND-92

Change-Id: I1a236d9f43b2e6dca22055911f696b43c22b5973
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

2 files changed, 114 insertions, 0 deletions

diff --git a/patches/fuel-agent/multiarch-efi/0001-Add-esp-partition-flag.patch b/patches/fuel-agent/multiarch-efi/0001-Add-esp-partition-flag.patch
new file mode 100644
index 00000000..1b067b10
--- /dev/null
+++ b/patches/fuel-agent/multiarch-efi/0001-Add-esp-partition-flag.patch
@@ -0,0 +1,48 @@
+From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+Date: Tue, 8 Mar 2016 16:29:39 +0100
+Subject: [PATCH] Add <esp> partition flag.
+
+Parted flag <esp> (see [1]) will mark EFI system partition, allowing us
+to properly format and mount it during do_partitioning deployment phase.
+
+[1] https://www.gnu.org/software/parted/manual/html_node/set.html
+---
+ fuel_agent/drivers/nailgun.py | 2 +-
+ fuel_agent/utils/partition.py | 4 ++--
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/fuel_agent/drivers/nailgun.py b/fuel_agent/drivers/nailgun.py
+index ef0e79a..94280e8 100644
+--- a/fuel_agent/drivers/nailgun.py
++++ b/fuel_agent/drivers/nailgun.py
+@@ -354,7 +354,7 @@ class Nailgun(BaseDataDriver):
+             # uefi partition (for future use)
+             LOG.debug('Adding UEFI partition on disk %s: size=200' %
+                       disk['name'])
+-            parted.add_partition(size=200)
++            parted.add_partition(size=200, flags=['esp'])
+
+             LOG.debug('Looping over all volumes on disk %s' % disk['name'])
+             for volume in disk['volumes']:
+diff --git a/fuel_agent/utils/partition.py b/fuel_agent/utils/partition.py
+index f7126b1..b811511 100644
+--- a/fuel_agent/utils/partition.py
++++ b/fuel_agent/utils/partition.py
+@@ -94,7 +94,7 @@ def set_partition_flag(dev, num, flag, state='on'):
+     :param dev: A device file, e.g. /dev/sda.
+     :param num: Partition number
+     :param flag: Flag name. Must be one of 'bios_grub', 'legacy_boot',
+-    'boot', 'raid', 'lvm'
++    'boot', 'raid', 'lvm', 'esp'
+     :param state: Desiable flag state. 'on' or 'off'. Default is 'on'.
+
+     :returns: None
+@@ -104,7 +104,7 @@ def set_partition_flag(dev, num, flag, state='on'):
+     # parted supports more flags but we are interested in
+     # setting only this subset of them.
+     # not all of these flags are compatible with one another.
+-    if flag not in ('bios_grub', 'legacy_boot', 'boot', 'raid', 'lvm'):
++    if flag not in ('bios_grub', 'legacy_boot', 'boot', 'raid', 'lvm', 'esp'):
+         raise errors.WrongPartitionSchemeError(
+             'Unsupported partition flag: %s' % flag)
+     if state not in ('on', 'off'):
diff --git a/patches/fuel-agent/multiarch-efi/0002-Add-fs-for-efi-partition.patch b/patches/fuel-agent/multiarch-efi/0002-Add-fs-for-efi-partition.patch
new file mode 100644
index 00000000..c18c7093
--- /dev/null
+++ b/patches/fuel-agent/multiarch-efi/0002-Add-fs-for-efi-partition.patch
@@ -0,0 +1,66 @@
+From: Stanislaw Kardach <stanislaw.kardach@cavium.com>
+Date: Tue, 8 Mar 2016 21:08:55 +0100
+Subject: [PATCH] Add fs for efi partition
+
+---
+ debian/control                |  1 +
+ fuel_agent/drivers/nailgun.py | 13 ++++++++++---
+ specs/fuel-agent.spec         |  1 +
+ 3 files changed, 12 insertions(+), 3 deletions(-)
+
+diff --git a/debian/control b/debian/control
+index e843980..c763ab9 100644
+--- a/debian/control
++++ b/debian/control
+@@ -40,6 +40,7 @@ Depends: bzip2,
+ 	 qemu-user-static,
+ 	 binfmt-support,
+ 	 dmidecode,
++	 dosfstools,
+ 	 ethtool,
+ 	 gdisk,
+ 	 genisoimage,
+diff --git a/fuel_agent/drivers/nailgun.py b/fuel_agent/drivers/nailgun.py
+index 94280e8..1463f22 100644
+--- a/fuel_agent/drivers/nailgun.py
++++ b/fuel_agent/drivers/nailgun.py
+@@ -82,6 +82,9 @@ class Nailgun(BaseDataDriver):
+         # was already allocated on first matching volume
+         # or not
+         self._boot_partition_done = False
++        # this var states whether ESP partition was already
++        # allocated on the first matching volume or not
++        self._esp_partition_done = False
+         # this var is used as a flag that /boot fs
+         # has already been added. we need this to
+         # get rid of md over all disks for /boot partition.
+@@ -351,10 +354,14 @@ class Nailgun(BaseDataDriver):
+             LOG.debug('Adding bios_grub partition on disk %s: size=24' %
+                       disk['name'])
+             parted.add_partition(size=24, flags=['bios_grub'])
+-            # uefi partition (for future use)
+-            LOG.debug('Adding UEFI partition on disk %s: size=200' %
++            # uefi partition - added only once.
++            if self._is_boot_disk(disk) and not self._esp_partition_done:
++                LOG.debug('Adding UEFI partition on disk %s: size=200' %
+                       disk['name'])
+-            parted.add_partition(size=200, flags=['esp'])
++                prt = parted.add_partition(size=200, flags=['esp'])
++                partition_scheme.add_fs(device=prt.name, mount='/boot/efi',
++                                        fs_type='vfat')
++                self._esp_partition_done = True
+
+             LOG.debug('Looping over all volumes on disk %s' % disk['name'])
+             for volume in disk['volumes']:
+diff --git a/specs/fuel-agent.spec b/specs/fuel-agent.spec
+index 18af4b9..8604e57 100644
+--- a/specs/fuel-agent.spec
++++ b/specs/fuel-agent.spec
+@@ -50,6 +50,7 @@ Requires:    xfsprogs
+ Requires:    pciutils
+ Requires:    ethtool
+ Requires:    debootstrap
++Requires:    dosfstools
+ Requires:    dpkg
+ Requires:    qemu-user-static
+ Requires:    xz