Merge branch 'ctb/6082-fix-monitoring-lb-cert-ref' into 'master'

The monitoring LB should use the current SSL certificate

See merge request !779

environments/gstg/variables.tf

@@ -298,7 +298,7 @@ variable "chef_provision" {
 }
 
 variable "monitoring_cert_link" {
-  default = "projects/gitlab-staging-1/global/sslCertificates/wildcard-gstg-gitlab-net"
+  default = "projects/gitlab-staging-1/global/sslCertificates/wildcard-gstg-gitlab-net-2020"
 }
 
 variable "data_disk_sizes" {