Skip minor version increment validation for branchless

Tempest plugins do not branch, therefore we do not need to enforce that
the minor version is incremented to leave room for stable releases.

Change-Id: I22ba5cb42070b5a450617872de2da337b327de1c
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

openstack_releases/cmds/validate.py

@@ -252,6 +252,10 @@ def validate_series_open(deliv, context):
 def validate_series_first(deliv, context):
     "The first release in a series needs to end with '.0'."
 
+    if deliv.type == 'tempest-plugin':
+        print('this rule does not apply to branchless tempest plugins')
+        return
+
     releases = deliv.releases
     if len(releases) != 1:
         # We only have to check this when the first release is being

openstack_releases/tests/test_validate.py

@@ -2746,6 +2746,35 @@ class TestValidateSeriesFirst(base.BaseTestCase):
         self.assertEqual(0, len(self.ctx.warnings))
         self.assertEqual(0, len(self.ctx.errors))
 
+    def test_branchless(self):
+        series_a_dir = self.tmpdir + '/a'
+        series_a_filename = series_a_dir + '/sahara-tests.yaml'
+        os.makedirs(series_a_dir)
+        deliverable_data = textwrap.dedent('''
+        ---
+        type: tempest-plugin
+        releases:
+          - version: 0.9.1
+            projects:
+              - repo: openstack/sahara-tests
+                hash: 1e016405f8dbdf265374700d2fb8f8e2a9460805
+        ''')
+        with open(series_a_filename, 'w') as f:
+            f.write(deliverable_data)
+        deliv = deliverable.Deliverable(
+            team='team',
+            series='a',
+            name='name',
+            data=yamlutils.loads(deliverable_data),
+        )
+        validate.validate_series_first(
+            deliv,
+            self.ctx,
+        )
+        self.ctx.show_summary()
+        self.assertEqual(0, len(self.ctx.warnings))
+        self.assertEqual(0, len(self.ctx.errors))
+
 
 class TestValidateSeriesFinal(base.BaseTestCase):