Add project annotation handling to repo

Allow the optional addition of "annotation" nodes nested under
projects.  Each annotation node must have "name" and "value"
attributes.  These name/value pairs will be exported into the
environment during any forall command, prefixed with "REPO__"

In addition, an optional "keep" attribute with case insensitive "true"
or "false" values can be included to determine whether the annotation
will be exported with 'repo manifest'

Change-Id: Icd7540afaae02c958f769ce3d25661aa721a9de8
Signed-off-by: James W. Mills <jameswmills@gmail.com>
4 files changed