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, 35 deletions

diff --git a/patches/opnfv-fuel/0015-build-Makefile-Overrideable-product-commit-hash.patch b/patches/opnfv-fuel/0015-build-Makefile-Overrideable-product-commit-hash.patch
deleted file mode 100644
index 1c9bd82a..00000000
--- a/patches/opnfv-fuel/0015-build-Makefile-Overrideable-product-commit-hash.patch
+++ /dev/null
@@ -1,35 +0,0 @@
-From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
-Date: Mon, 18 Jul 2016 23:50:30 +0200
-Subject: [PATCH] build/Makefile: Overrideable product, commit hash.
-
-For Armband's build system, using only the Fuel commit ID is not
-enough to fully describe the state of the source code, as patches
-are also applied to other fuel modules (as git submodules).
-Instead, a pointer to a valid Armband commit ID should be used.
-
-While at it, allow product name to be overriden, to signal the
-commit ID should be looked up inside the Armband repository.
-
-Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
----
- build/Makefile | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/build/Makefile b/build/Makefile
-index ec5d27a..ba117da 100644
---- a/build/Makefile
-+++ b/build/Makefile
-@@ -21,11 +21,11 @@ SHELL = /bin/bash
- export MOSVERSION = 9.0
- export ISOSRC = file:$(shell pwd)/fuel-$(MOSVERSION).iso
- export ISOCACHE = $(shell pwd)/$(shell basename $(ISOSRC))
--export PRODNO = "OPNFV_FUEL"
-+export PRODNO ?= "OPNFV_FUEL"
- export REVSTATE = "P0000"
- export USER ?= $(shell whoami)
- export BUILD_DATE = $(shell date --utc +%Y-%m-%d:%H:%M)
--export OPNFV_GIT_SHA = $(shell git rev-parse HEAD)
-+export OPNFV_GIT_SHA ?= $(shell git rev-parse HEAD)
- # Store in /etc/fuel_build_id on fuel master
- export BUILD_ID := $(PRODNO)_$(BUILD_DATE)_$(OPNFV_GIT_SHA)
-