Merge branch 'mattkasa/handle-empty-terraform-plan' into 'master'

Handle empty terraform plan

See merge request gitlab-org/gitlab!30002

lib/gitlab/ci/templates/Terraform.gitlab-ci.yml

@@ -19,7 +19,7 @@ cache:
     - .terraform
 
 before_script:
-  - alias convert_report="jq -r '([.resource_changes[].change.actions?]|flatten)|{\"create\":(map(select(.==\"create\"))|length),\"update\":(map(select(.==\"update\"))|length),\"delete\":(map(select(.==\"delete\"))|length)}'"
+  - alias convert_report="jq -r '([.resource_changes[]?.change.actions?]|flatten)|{\"create\":(map(select(.==\"create\"))|length),\"update\":(map(select(.==\"update\"))|length),\"delete\":(map(select(.==\"delete\"))|length)}'"
   - terraform --version
   - terraform init