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, 77 insertions, 0 deletions

diff --git a/patches/fuel-plugin-ovs/0004-pre_build_hook-Introduce-USE_DOCKER-option.patch b/patches/fuel-plugin-ovs/0004-pre_build_hook-Introduce-USE_DOCKER-option.patch
new file mode 100644
index 00000000..7df0c5f6
--- /dev/null
+++ b/patches/fuel-plugin-ovs/0004-pre_build_hook-Introduce-USE_DOCKER-option.patch
@@ -0,0 +1,77 @@
+From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+Date: Sun, 26 Jun 2016 20:00:22 +0200
+Subject: [PATCH] pre_build_hook: Introduce USE_DOCKER option
+
+The build system uses Ubuntu Trusty, which is not properly supported
+by Docker on AArch64 architecture.
+Introduce a new environment variable for enabling/disabling build
+containerization, and disable by default said variable for AArch64.
+
+This requires a slight rework of the pre_build_hook script.
+
+NOTE: Setting USE_DOCKER to false will build the packages on the host
+machine directly.
+
+AArch64 WARNING: This build will install packages automatically!
+
+Change-Id: Ib1294949ecc1767f12631a82e2c7099c45fcb615
+Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+---
+ pre_build_hook | 33 +++++++++++++++++++++++----------
+ 1 file changed, 23 insertions(+), 10 deletions(-)
+
+diff --git a/pre_build_hook b/pre_build_hook
+index 63cf7b4..b9ae6bb 100755
+--- a/pre_build_hook
++++ b/pre_build_hook
+@@ -3,27 +3,40 @@
+ set -eux
+
+ BUILD_FOR=${BUILD_FOR:-ubuntu}
++USE_DOCKER=${USE_DOCKER:-true}
+ DIR="$(dirname `readlink -f $0`)"
+
++if [ `uname -m` = 'aarch64' ]; then
++  USE_DOCKER=false
++fi
++
+ function build_pkg {
+   case $1 in
+     ubuntu)
+-      rm -rf ${DIR}/repositories/ubuntu; mkdir -p ${DIR}/repositories/ubuntu
++      DEB_DIR=${DIR}/deb-ovs-dpdk
++      DEB_DIR_NSH=${DIR}/deb-ovs-nsh-dpdk
++
++      rm -rf ${DIR}/repositories/ubuntu ${DEB_DIR} ${DEB_DIR_NSH}
++      mkdir -p ${DIR}/repositories/ubuntu ${DEB_DIR} ${DEB_DIR_NSH}
++      sudo chmod -R 777 ${DEB_DIR} ${DEB_DIR_NSH}
+
+       cd ${DIR}/ovs_build
+-      sudo docker build -t ovs_build .
++      if [ "${USE_DOCKER}" = true ]; then
++        sudo docker build -t ovs_build .
++        sudo docker run -v ${DEB_DIR}:/deb -t ovs_build /ovs_build/build-ovs-dpdk.sh
++        sudo docker run -v ${DEB_DIR_NSH}:/deb -t ovs_build /ovs_build/build-ovs-nsh-dpdk.sh
++      else
++        rm -rf /tmp/ovs-build-{,nsh-}dpdk; mkdir -p /tmp/ovs-build-{,nsh-}dpdk
++        BUILD_HOME=/tmp/ovs-build-dpdk BUILD_DEB=${DEB_DIR} ./build-ovs-dpdk.sh
++        BUILD_HOME=/tmp/ovs-build-nsh-dpdk BUILD_DEST=${DEB_DIR_NSH} ./build-ovs-nsh-dpdk.sh
++        rm -rf /tmp/ovs-build-{,nsh-}dpdk
++      fi
+
+-      DEB_DIR=${DIR}/deb-ovs-dpdk
+-      rm -rf ${DEB_DIR};  mkdir -p ${DEB_DIR}; chmod 777 ${DEB_DIR};
+-      sudo docker run -v ${DEB_DIR}:/deb -t  ovs_build /ovs_build/build-ovs-dpdk.sh
+       cd ${DEB_DIR}; tar czvf ../repositories/ubuntu/ovs-dpdk.tar.gz .;
+       cd ..; rm -rf ${DEB_DIR}
+
+-      DEB_DIR=${DIR}/deb-ovs-nsh-dpdk
+-      rm -rf ${DEB_DIR};  mkdir -p ${DEB_DIR}; chmod 777 ${DEB_DIR};
+-      sudo docker run -v ${DEB_DIR}:/deb -t  ovs_build /ovs_build/build-ovs-nsh-dpdk.sh
+-      cd ${DEB_DIR}; tar czvf ../repositories/ubuntu/ovs-nsh-dpdk.tar.gz .;
+-      cd ..; rm -rf ${DEB_DIR}
++      cd ${DEB_DIR_NSH}; tar czvf ../repositories/ubuntu/ovs-nsh-dpdk.tar.gz .;
++      cd ..; rm -rf ${DEB_DIR_NSH}
+
+       ;;
+     *) echo "Not supported system"; exit 1;;