oe-build-perf-test: tag results committed to Git

Create a Git tag when committing results to a Git repository. This patch
also implements --commit-results-tag command line option for controlling
the tag name. The value
is a format string where the following fields may be used:
- {git_branch} - target branch being tested
- {git_commit} - target commit being tested
- {tester_host} - hostname of the tester machine

Tagging can be disabled by giving an empty string to
--commit-results-tag. The option has no effect if --commit-results is
not defined.

(From OE-Core rev: 60059ff5b81d6ba9ba344161d51d1290559ac2df)

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/oe-build-perf-test

@@ -139,6 +139,9 @@ def parse_args(argv):
     parser.add_argument('--commit-results-branch', metavar='BRANCH',
                         default="{git_branch}",
                         help="Commit results to branch BRANCH.")
+    parser.add_argument('--commit-results-tag', metavar='TAG',
+                        default="{git_branch}/{git_commit}",
+                        help="Tag results commit with TAG.")
 
     return parser.parse_args(argv)
 
@@ -193,7 +196,8 @@ def main(argv=None):
             result.update_globalres_file(args.globalres_file)
         if args.commit_results:
             result.git_commit_results(args.commit_results,
-                                      args.commit_results_branch)
+                                      args.commit_results_branch,
+                                      args.commit_results_tag)
         return 0
 
     return 1