VED-811: Prefix tfplan artifact name with environment & sub-environment. (#913)

Author: mfjarvis

.github/workflows/deploy-backend.yml

@@ -82,7 +82,7 @@ jobs:
       - name: Save Terraform Plan
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
         with:
-          name: tfplan
+          name: ${{ env.ENVIRONMENT }}-${{ env.SUB_ENVIRONMENT }}-tfplan
           path: terraform/tfplan
 
   terraform-apply:
@@ -107,7 +107,7 @@ jobs:
       - name: Retrieve Terraform Plan
         uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
         with:
-          name: tfplan
+          name: ${{ env.ENVIRONMENT }}-${{ env.SUB_ENVIRONMENT }}-tfplan
           path: terraform
 
       - name: Terraform Init