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>

3 files changed, 36 insertions, 0 deletions

diff --git a/patches/fuel-web/multiarch-fuel/0000-Add-arch-to-nailgun-release-and-target-image.patch b/patches/fuel-web/multiarch-fuel/0000-Add-arch-to-nailgun-release-and-target-image.patch
new file mode 120000
index 00000000..64ff45c3
--- /dev/null
+++ b/patches/fuel-web/multiarch-fuel/0000-Add-arch-to-nailgun-release-and-target-image.patch
@@ -0,0 +1 @@
+../0002-Add-arch-to-nailgun-release-and-target-image.patch
\ No newline at end of file
diff --git a/patches/fuel-web/multiarch-fuel/0000-nailgun-Add-AArch64-Openstack-Mitaka-release-s.patch b/patches/fuel-web/multiarch-fuel/0000-nailgun-Add-AArch64-Openstack-Mitaka-release-s.patch
new file mode 120000
index 00000000..e0d56a81
--- /dev/null
+++ b/patches/fuel-web/multiarch-fuel/0000-nailgun-Add-AArch64-Openstack-Mitaka-release-s.patch
@@ -0,0 +1 @@
+../0001-nailgun-Add-AArch64-Openstack-Mitaka-release-s.patch
\ No newline at end of file
diff --git a/patches/fuel-web/multiarch-fuel/0001-FIXME-Disable-amd64-Mitaka-on-Ubuntu-for-now.patch b/patches/fuel-web/multiarch-fuel/0001-FIXME-Disable-amd64-Mitaka-on-Ubuntu-for-now.patch
new file mode 100644
index 00000000..d76a1f6d
--- /dev/null
+++ b/patches/fuel-web/multiarch-fuel/0001-FIXME-Disable-amd64-Mitaka-on-Ubuntu-for-now.patch
@@ -0,0 +1,34 @@
+From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+Date: Sat, 19 Mar 2016 19:02:15 +0100
+Subject: [PATCH] FIXME: Disable amd64 Mitaka on Ubuntu for now.
+
+Until we fix all cohabitation of amd64 and arm64, disable Openstack
+releases <Mitaka on Ubuntu 14.04> and <Mitaka on Ubuntu+UCA 14.04>
+(both x86_64) in openstack.yaml fixture.
+
+TODO: Propose renaming above releases to include arch in name.
+Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+---
+ nailgun/nailgun/fixtures/openstack.yaml | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/nailgun/nailgun/fixtures/openstack.yaml b/nailgun/nailgun/fixtures/openstack.yaml
+index c5087b6..ba25093 100644
+--- a/nailgun/nailgun/fixtures/openstack.yaml
++++ b/nailgun/nailgun/fixtures/openstack.yaml
+@@ -1980,6 +1980,7 @@
+   extend: *base_release
+   fields:
+     name: "Mitaka on Ubuntu 14.04"
++    state: "unavailable"
+     version: "mitaka-9.0"
+     arch: "amd64"
+     operating_system: "Ubuntu"
+@@ -2221,6 +2222,7 @@
+   extend: *ubuntu_release
+   fields:
+     name: "Mitaka on Ubuntu+UCA 14.04"
++    state: "unavailable"
+     version: "mitaka-9.0"
+     arch: "amd64"
+     description: "This option will install the OpenStack Mitaka packages using Ubuntu as a base operating system, including Ubuntu Cloud Archive OpenStack packages. With high availability features built in, you are getting a robust, enterprise-grade OpenStack deployment."