oeqa/utils/gitarchive: Return tag name and improve exclude handling

Tweak the gitarchive exclude handling not to error if excluded files
don't match.

Also return the tagname created so that other code can then use it.

(From OE-Core rev: 1adba3430faffdf6217b6a00533a3b48a9388abc)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/gitarchive.py

@@ -67,7 +67,7 @@ def git_commit_data(repo, data_dir, branch, message, exclude, notes, log):
 
         # Remove files that are excluded
         if exclude:
-            repo.run_cmd(['rm', '--cached'] + [f for f in exclude], env_update)
+            repo.run_cmd(['rm', '--cached', '--ignore-unmatch'] + [f for f in exclude], env_update)
 
         tree = repo.run_cmd('write-tree', env_update)
 
@@ -202,6 +202,8 @@ def gitarchive(data_dir, git_dir, no_create, bare, commit_msg_subject, commit_ms
         log.info("Pushing data to remote")
         data_repo.run_cmd(cmd)
 
+    return tag_name
+
 # Container class for tester revisions
 TestedRev = namedtuple('TestedRev', 'commit commit_number tags')