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, 70 insertions, 0 deletions

diff --git a/patches/opnfv-fuel/0001-build-Add-ARMBAND_BASE-support.patch b/patches/opnfv-fuel/0001-build-Add-ARMBAND_BASE-support.patch
new file mode 100644
index 00000000..17cfd689
--- /dev/null
+++ b/patches/opnfv-fuel/0001-build-Add-ARMBAND_BASE-support.patch
@@ -0,0 +1,70 @@
+From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+Date: Thu, 11 Aug 2016 15:34:32 +0200
+Subject: [PATCH] build: Add ARMBAND_BASE support
+
+Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
+---
+ build/Makefile          | 10 ++++++++++
+ build/docker/Dockerfile |  2 +-
+ build/docker/runcontext |  6 +++++-
+ 3 files changed, 18 insertions(+), 2 deletions(-)
+
+diff --git a/build/Makefile b/build/Makefile
+index 4454c35..377ecc6 100644
+--- a/build/Makefile
++++ b/build/Makefile
+@@ -14,4 +14,9 @@ SHELL = /bin/bash
+
++# Only configure Armband specific stuff when ARMBAND_BASE is set
++ifdef ARMBAND_BASE
++    include ${ARMBAND_BASE}/armband-fuel-config.mk
++endif
++
+ ############################################################################
+ # BEGIN of variables to customize
+ #
+@@ -140,6 +140,7 @@ $(ISOCACHE):
+ 	# fuel-main Makefiles do not like `make -C`
+ 	cd $(FUEL_MAIN_DIR) && make repos
+ 	cp f_repos/.cachefuelinfo gitinfo_fuel.txt
++	test -z $(ARMBAND_BASE) || $(REPOINFO) $(ARMBAND_BASE) >> gitinfo_fuel.txt
+
+ 	# Repeat build up to three times
+ 	sudo -E ./fuel_build_loop
+diff --git a/build/docker/Dockerfile b/build/docker/Dockerfile
+index b38ea4c..624f233 100644
+--- a/build/docker/Dockerfile
++++ b/build/docker/Dockerfile
+@@ -30,7 +30,7 @@ RUN echo "Defaults env_keep += \"ftp_proxy http_proxy https_proxy no_proxy RSYNC
+ # Keeping PWD is needed to build as root
+ RUN echo "Defaults env_keep += \"PWD\"" > /etc/sudoers.d/keep-pwd
+ # Keeping variables for ISO build
+-RUN echo "Defaults env_keep += \"MIRROR_UBUNTU MIRROR_UBUNTU_ROOT MIRROR_MOS_UBUNTU MIRROR_MOS_UBUNTU_ROOT MIRROR_FUEL LATEST_TARGET_UBUNTU UBUNTU_ARCH\"" > /etc/sudoers.d/keep-mos
++RUN echo "Defaults env_keep += \"MIRROR_UBUNTU MIRROR_UBUNTU_ROOT MIRROR_MOS_UBUNTU MIRROR_MOS_UBUNTU_ROOT MIRROR_FUEL LATEST_TARGET_UBUNTU UBUNTU_ARCH ARMBAND_BASE\"" > /etc/sudoers.d/keep-mos
+ RUN chmod 0440 /etc/sudoers.d/open-sudo
+ RUN chmod 0440 /etc/sudoers.d/keep-proxies
+ RUN chmod 0440 /etc/sudoers.d/keep-pwd
+diff --git a/build/docker/runcontext b/build/docker/runcontext
+index daad663..e4874df 100755
+--- a/build/docker/runcontext
++++ b/build/docker/runcontext
+@@ -42,6 +42,10 @@ GITROOT=`git rev-parse --show-toplevel`
+ CID_FILE=`mktemp -u -t runcontext.XXXXXXXXXX`
+ CONTEXT_DIR=`mktemp -d ${GITROOT}/.docker_contextXXXXXX`
+
++if [[ $ARMBAND_BASE ]]; then
++    GITROOT=$ARMBAND_BASE
++fi
++
+ # If RSYNC_CONNECT_PROG is used, we need to copy all of
+ # the SSH structure, should one of the keys need to be
+ # used.
+@@ -115,7 +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 OPNFV_GIT_SHA \
++    -e LATEST_TARGET_UBUNTU -e UBUNTU_ARCH -e OPNFV_GIT_SHA -e ARMBAND_BASE \
+     -u $USER_ID:$GROUP_ID -w $PWD \
+     -v $GITROOT:$GITROOT -v /sys/fs/cgroup:/sys/fs/cgroup:ro $CACHEMOUNT"
+