Use hotlink instead log url in github job report

This change make the job name in the job report comments of github
driver as a hotlink to instead of using a log url directly. This can
make the report comments more brief.

Change-Id: I19fb8ffbc153230b7f8eedfcd5ac15ec81a66c72
diff --git a/tests/unit/test_github_driver.py b/tests/unit/test_github_driver.py
index ebb5e1c..e404451 100644
--- a/tests/unit/test_github_driver.py
+++ b/tests/unit/test_github_driver.py
@@ -50,6 +50,12 @@
         self.assertEqual(str(A.head_sha), zuulvars['patchset'])
         self.assertEqual('master', zuulvars['branch'])
         self.assertEqual(1, len(A.comments))
+        self.assertThat(
+            A.comments[0],
+            MatchesRegex('.*\[project-test1 \]\(.*\).*', re.DOTALL))
+        self.assertThat(
+            A.comments[0],
+            MatchesRegex('.*\[project-test2 \]\(.*\).*', re.DOTALL))
         self.assertEqual(2, len(self.history))
 
         # test_pull_unmatched_branch_event(self):