This commit adds git commit hash and build date to airshipctl version
command.
Relates-To: #630
Signed-off-by: Sreejith Punnapuzha <Sreejith.Punnapuzha@outlook.com>
Change-Id: Ic27db40cf80153cb5d3af3accacd33e85d36010d
Now the version can be changed from Makefile/env.
By default version is 'devel' if there is no ldflags in build args.
It can be overriden by providing ldflags in Makefile.
Change-Id: Ifef5932ec953ccfaeca8a2ef58eb951c900c7a59