Explicitely disable ssl in mariadb server config

After mariadb 10.5.18, mariadb fails to start if ssl cert parameters
are configured in the file but the certificates do not exist [1]. This
problem was fixed in puppetlabs-mysql 13.1.0[2] but we use older
versions (13.0.0 in stable/zed for example) in stable branch jobs.

CentOS Stream 9 has just bumped to mariadb-10.5.22 and this is breaking
all non-ssl jobs.

I'm also fixing u-c url to use the proper version for Xena and pinning
Ruby gems versions required for CentOS Stream 8.

[1] https://mariadb.com/kb/en/mariadb-10-5-18-release-notes/#ssl
[2] https://github.com/puppetlabs/puppetlabs-mysql/issues/1509

Change-Id: I317c5b1fa8967dc40437fa6e3258b7d8f2c79e58

packstack/puppet/modules/packstack/manifests/mariadb.pp

@@ -39,6 +39,7 @@ class packstack::mariadb ()
           'wsrep_cluster_name'     => 'galera_cluster',
           'wsrep_sst_method'       => 'rsync',
           'wsrep_sst_auth'         => "root:${mysql_root_password}",
+          'ssl-disable'            => true,
         },
       },
     }

run_tests.sh

@@ -17,7 +17,7 @@ export PATH=$PATH:/usr/local/sbin:/usr/sbin
 
 SCENARIO=${SCENARIO:-scenario001}
 
-BRANCH=master
+BRANCH=stable/yoga
 
 # Find OS version and release
 source /etc/os-release
@@ -278,8 +278,15 @@ if [ "${INSTALL_FROM_SOURCE}" = true ]; then
   if ([ "$OS_NAME" = "RedHat" ] || [ "$OS_NAME" = "CentOS" ]) && [ $OS_VERSION -gt 8 ]; then
       $SUDO gem install r10k
   else
-      $SUDO gem install gettext -v 3.2.9 --no-ri --no-rdoc
-      $SUDO gem install r10k -v 2.6.4 --no-ri --no-rdoc
+    cat <<EOF >/tmp/Gemfile
+source 'http://rubygems.org'
+gem 'fast_gettext', '<1.2.0'
+gem 'gettext', '< 3.3.0'
+gem 'multipart-post', '<2.2.0'
+gem 'semantic_puppet', '<1.1.0'
+gem 'r10k', '= 2.6.4'
+EOF
+    $SUDO gem install -g /tmp/Gemfile
   fi
   # make sure there is no puppet module pre-installed
   $SUDO rm -rf "${PUPPETFILE_DIR:?}/"*

tox.ini

@@ -10,7 +10,7 @@ setenv = VIRTUAL_ENV={envdir}
          LANGUAGE=en_US:en
          LC_ALL=C
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/yoga}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt