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>

1 files changed, 0 insertions, 63 deletions

diff --git a/patches/opnfv-fuel/0054-net-check-add-support-for-faulty-operstate.patch b/patches/opnfv-fuel/0054-net-check-add-support-for-faulty-operstate.patch
deleted file mode 100644
index 8a765c92..00000000
--- a/patches/opnfv-fuel/0054-net-check-add-support-for-faulty-operstate.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From: Stefan Sicleru <stefan.sicleru@enea.com>
-Date: Tue, 30 Aug 2016 17:53:41 +0200
-Subject: [PATCH] net-check: add support for faulty operstate
-
-Some eth drivers, such as those for APM X-Gene Mustang Board's NICs, do
-not advertise operstate properly in sysfs, ie. it is advertised as
-"unknown" whereas ethtool shows the NIC as fully functional with link
-detected. This further affects "ip link show" output which is parsed
-within _check_iface_ready() method.
-
-Replace "ip link show" command with "ethtool" in order to obtain proper
-results when operstate is unknown.
-
-Signed-off-by: Stefan Sicleru <stefan.sicleru@enea.com>
----
- ...et-check-add-support-for-faulty-operstate.patch | 38 ++++++++++++++++++++++
- 1 file changed, 38 insertions(+)
- create mode 100644 build/patch-repos/build/repos/network-checker/0010-net-check-add-support-for-faulty-operstate.patch
-
-diff --git a/build/patch-repos/build/repos/network-checker/0010-net-check-add-support-for-faulty-operstate.patch b/build/patch-repos/build/repos/network-checker/0010-net-check-add-support-for-faulty-operstate.patch
-new file mode 100644
-index 0000000..71e7b73
---- /dev/null
-+++ b/build/patch-repos/build/repos/network-checker/0010-net-check-add-support-for-faulty-operstate.patch
-@@ -0,0 +1,38 @@
-+From: Stefan Sicleru <stefan.sicleru@enea.com>
-+Date: Tue, 30 Aug 2016 17:30:24 +0200
-+Subject: [PATCH] net-check: add support for faulty operstate
-+
-+Some eth drivers, such as those for APM X-Gene Mustang Board's NICs, do
-+not advertise operstate properly in sysfs, ie. it is advertised as
-+"unknown" whereas ethtool shows the NIC as fully functional with link
-+detected. This further affects "ip link show" output which is parsed
-+within _check_iface_ready() method.
-+
-+Replace "ip link show" command with "ethtool" in order to obtain proper
-+results when operstate is unknown.
-+
-+Signed-off-by: Stefan Sicleru <stefan.sicleru@enea.com>
-+---
-+ network_checker/net_check/api.py | 9 ++++++++-
-+ 1 file changed, 8 insertions(+), 1 deletion(-)
-+
-+diff --git a/network_checker/net_check/api.py b/network_checker/net_check/api.py
-+index e3c3b4e..87aa257 100755
-+--- a/network_checker/net_check/api.py
-++++ b/network_checker/net_check/api.py
-+@@ -195,7 +195,14 @@ class Actor(object):
-+     def _check_iface_ready(self, iface, vid=None):
-+         check_iface = self._iface_name(iface, vid)
-+         output = self._execute(['ip', '-o', 'link', 'show', check_iface])
-+-        return 'state UP' in '\n'.join(output)
-++        if 'state UP' in '\n'.join(output):
-++            return True
-++
-++        if 'state UNKNOWN' in '\n'.join(output) and vid == None:
-++            output = self._execute(['ethtool', check_iface])
-++            return 'Link detected: yes' in '\n'.join(output).replace('\n', ' ')
-++
-++        return False
-+ 
-+     def _ensure_iface_up(self, iface, vid=None):
-+         """Ensures interface is with vid up."""