[sre-ci]Add galera_mysql parametr for mysql 5.7

Related-Prod: PROD-36707
Change-Id: I2bf38f1d354d0895133a23b89bb14d47dd8a65d1
diff --git a/tcp_tests/templates/heat-cicd-queens-contrail41-sl/salt-context-cookiecutter-contrail.yaml b/tcp_tests/templates/heat-cicd-queens-contrail41-sl/salt-context-cookiecutter-contrail.yaml
index 6449796..4076dbb 100644
--- a/tcp_tests/templates/heat-cicd-queens-contrail41-sl/salt-context-cookiecutter-contrail.yaml
+++ b/tcp_tests/templates/heat-cicd-queens-contrail41-sl/salt-context-cookiecutter-contrail.yaml
@@ -294,6 +294,7 @@
   nova_vnc_tls_enabled: 'True'
   stacklight_ssl_enabled: 'True'
   galera_ssl_enabled: 'True'
+  galera_mysql_version: 5.7
   openstack_mysql_x509_enabled: 'True'
   rabbitmq_ssl_enabled: 'True'
   openstack_rabbitmq_x509_enabled: 'True'