Merge branch 'terraform-0.14-cache' into 'master'

Add .terraform.lock.hcl to terraform template in order to support terraform 0.14

See merge request gitlab-org/gitlab!50647

changelogs/unreleased/terraform-0-14-cache.yml

+---
+title: Update Terraform Pipline templaes to support 0.14 lockfile cache
+merge_request: 50647
+author: Aurelian Shuttleworth
+type: fixed

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

@@ -17,6 +17,7 @@ variables:
 cache:
   paths:
     - .terraform
+    - .terraform.lock.hcl
 
 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)}'"

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

@@ -19,6 +19,7 @@ cache:
   key: "${TF_ROOT}"
   paths:
     - ${TF_ROOT}/.terraform/
+    - ${TF_ROOT}/.terraform.lock.hcl
 
 .init: &init
   stage: init