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, 48 deletions

diff --git a/patches/opnfv-fuel/0046-build-Use-OPNFV_GIT_SHA-for-ISO-preparer-ID.patch b/patches/opnfv-fuel/0046-build-Use-OPNFV_GIT_SHA-for-ISO-preparer-ID.patch
deleted file mode 100644
index e6d4dc21..00000000
--- a/patches/opnfv-fuel/0046-build-Use-OPNFV_GIT_SHA-for-ISO-preparer-ID.patch
+++ /dev/null
@@ -1,48 +0,0 @@
-From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
-Date: Wed, 17 Aug 2016 21:56:22 +0200
-Subject: [PATCH] build: Use OPNFV_GIT_SHA for ISO preparer ID
-
-isoinfo -i lists the following information for Fuel@OPNFV ISO:
-"Data preparer id: 86aafaf5454a846c417848bb94f264c4420160f3"
-where the SHA hash is Fuel git repo HEAD SHA.
-
-However, Armband overrides OPNFV_GIT_SHA to the Armband git repo
-commit hash, so the ISO metadata should also reflect this.
-
-Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
----
- build/docker/runcontext  | 2 +-
- build/install/install.sh | 6 +++++-
- 2 files changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/build/docker/runcontext b/build/docker/runcontext
-index e4874df..07b0dc1 100755
---- a/build/docker/runcontext
-+++ b/build/docker/runcontext
-@@ -119,7 +119,7 @@ RUN_CONTEXT_OPT="--cidfile $CID_FILE --privileged=true --rm \
-     -e HOME=$HOME -e CACHEDEBUG -e CACHETRANSPORT -e CACHEMAXAGE -e CACHEBASE \
-     -e BUILD_FUEL_PLUGINS -e MIRROR_UBUNTU -e MIRROR_UBUNTU_ROOT \
-     -e MIRROR_MOS_UBUNTU -e MIRROR_MOS_UBUNTU_ROOT -e MIRROR_FUEL \
--    -e LATEST_TARGET_UBUNTU -e UBUNTU_ARCH -e ARMBAND_BASE \
-+    -e LATEST_TARGET_UBUNTU -e UBUNTU_ARCH -e ARMBAND_BASE -e OPNFV_GIT_SHA \
-     -u $USER_ID:$GROUP_ID -w $PWD \
-     -v $GITROOT:$GITROOT -v /sys/fs/cgroup:/sys/fs/cgroup:ro $CACHEMOUNT"
- 
-diff --git a/build/install/install.sh b/build/install/install.sh
-index f6308fb..9e003bb 100755
---- a/build/install/install.sh
-+++ b/build/install/install.sh
-@@ -210,8 +210,12 @@ make_iso_image() {
-     find . -name TRANS.TBL -exec rm {} \;
-     rm -rf rr_moved
- 
-+    if [[ -z "$OPNFV_GIT_SHA" ]]; then
-+        OPNFV_GIT_SHA=$(git rev-parse --verify HEAD)
-+    fi
-+
-     mkisofs --quiet -r -V "$VOLUMEID" -publisher "$PUBLISHER" \
--        -p `git rev-parse --verify HEAD` -J -R -b isolinux/isolinux.bin \
-+        -p "$OPNFV_GIT_SHA" -J -R -b isolinux/isolinux.bin \
-         -no-emul-boot \
-         -boot-load-size 4 -boot-info-table \
-         --hide-rr-moved \