buildpackage-rpm: support setting the 'VCS:' tag in spec

Now gbp buildpackage-rpm is able to update the 'VCS:' tag in the exported
spec file. A new config option 'spec-vcs-tag' controls the format:
- if empty, no 'VCS' tag is inserted and possible old 'VCS' tag is
  removed
- otherwise, a 'VCS' tag is inserted or the old 'VCS' tag is updated

The spec-vcs-tag is a format string which supports the following
keywords:
- '%(commit)' expands to the full commit sha1
- '%(commitish)' expands to the sha1 of the exported object (commit or
   tag)
- '%(tagname)s' expands to the long tag name (from git-describe)

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/gbp/config.py b/gbp/config.py
index 08293d34..dceb011e 100644
--- a/gbp/config.py
+++ b/gbp/config.py
@@ -787,6 +787,7 @@ class GbpOptionParserRpm(GbpOptionParser):
         'changelog-revision': '',
         'spawn-editor': 'always',
         'editor-cmd': 'vim',
+        'spec-vcs-tag': '',
     })
 
     help = dict(GbpOptionParser.help)
@@ -848,6 +849,9 @@ class GbpOptionParserRpm(GbpOptionParser):
             'git-author':
                 "Use name and email from git-config for the changelog header, "
                 "default is '%(git-author)s'",
+            'spec-vcs-tag':
+                "Set/update the 'VCS:' tag in the spec file, empty value "
+                "removes the tag entirely, default is '%(spec-vcs-tag)s'",
         })
 
     def _warn_old_gbp_conf(self, gbp_conf):