Heat Launcher - bracket IPv6 in db connection URI

In the database connection URI ensure IPv6 address is wrapped in
brackets. Without this a port number is assumed and error is raised:
  ERROR: invalid literal for int() with base 10: 'dead:beef:4::3'

Related-Bug: #1983121
Change-Id: I37fda2aa161120369d0e3734b9485c27cb59846c
(cherry picked from commit ec8e134234)

tripleoclient/heat_launcher.py

@@ -43,6 +43,7 @@ from tripleoclient.constants import (DEFAULT_HEAT_CONTAINER,
                                      DEFAULT_TEMPLATES_DIR,
                                      EPHEMERAL_HEAT_POD_NAME)
 from tripleoclient.exceptions import HeatPodMessageQueueException
+from tripleoclient import utils as oooutils
 
 log = logging.getLogger(__name__)
 
@@ -714,7 +715,7 @@ class HeatPodLauncher(HeatContainerLauncher):
         return ('mysql+pymysql://'
                 'heat:heat@{}/heat?read_default_file='
                 '/etc/my.cnf.d/tripleo.cnf&read_default_group=tripleo'.format(
-                    self._get_ctlplane_vip()))
+                    oooutils.bracket_ipv6(self._get_ctlplane_vip())))
 
     def _get_ctlplane_vip(self):
         return self._decode(subprocess.check_output(

tripleoclient/tests/test_heat_launcher.py

@@ -39,6 +39,9 @@ class TestHeatPodLauncher(base.TestCase):
             os.path.join(os.path.dirname(__file__),
                          '..', '..', 'templates')).start()
         self.heat_dir = self.useFixture(fixtures.TempDir()).path
+        self.bracket_ipv6 = mock.patch(
+            'tripleoclient.utils.bracket_ipv6').start()
+        self.bracket_ipv6.return_value = '1.1.1.1'
 
         self.addCleanup(mock.patch.stopall)