Fix AIAB gate Heat test & MariaDB failures

1. Downgrade ingress controller for MariaDB

Current MariaDB charts [1] do not support the latest
nginx ingress controller, e.g. Vts related parameters
were removed in June [2] from the controller.

An updated version matches the version that is configured
in mariadb chart by default.

[1] https://github.com/openstack/openstack-helm-infra/blob
        /6a1a46a8ce390fd5d5fa5736796f5747874ce1fb/mariadb/files/nginx.tmpl
[2] https://github.com/kubernetes/ingress-nginx/commit
        /63b38e1c21e6486607ac4485161f88663d6ef5a9

2. Specify rally test version for heat, default version
is not compatible with test scripts in htk.

Change-Id: I58ae26dd7de4bada98f940a4d2030f38e54ba4a0

deployment_files/global/v1.0demo/software/charts/osh/component-infrastructure/heat.yaml

@@ -30,6 +30,10 @@ data:
     timeout: 1800
     labels:
       release_group: airship-heat
+  test:
+    enabled: true
+    options:
+      cleanup: false
   install:
     no_hooks: false
   upgrade:

deployment_files/global/v1.0demo/software/config/versions.yaml

@@ -611,6 +611,7 @@ data:
         dep_check: *dep_check
         rabbit_init: *rabbitmq
       heat:
+        test: *rally_test
         bootstrap: *heat
         db_init: *heat
         heat_db_sync: *heat
@@ -654,7 +655,7 @@ data:
         dep_check: *dep_check
       mariadb:
         mariadb: *mariadb_db
-        ingress: *ingress_controller
+        ingress: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.9.0
         error_pages: *ingress_error_pages
         prometheus_create_mysql_user: *mariadb_db
         prometheus_mysql_exporter: docker.io/prom/mysqld-exporter:v0.10.0