Add canary strategy to crash stage in Cloud Deploy pipeline (#3057)

* Add customCanaryDeployment strategy to crash

* change key to partialDeploymentAlertPolicyChecks

* add more indentation to alert policies config

release/cloudbuild-clouddeploy.yaml

@@ -47,7 +47,7 @@ steps:
         /^stableDeploymentAlertPolicyChecks:/ { capture = 1; next }
         capture {
           if ($0 ~ /^[^[:space:]]/ && $0 != "") { capture = 0; exit }
-          print "            " $0
+          print "                " $0
         }
         ' "$config_file" > checks.tmp
         
@@ -55,6 +55,23 @@ steps:
         sed -i '/stableDeploymentAlertPolicyChecks/r checks.tmp' release/clouddeploy/delivery-pipeline.yaml
         sed -i '/stableDeploymentAlertPolicyChecks/d' release/clouddeploy/delivery-pipeline.yaml
         rm -f checks.tmp
+
+        # Extract only the indented block under partialDeploymentAlertPolicyChecks.
+        if grep -q "^partialDeploymentAlertPolicyChecks:" "$config_file"; then
+          echo "Extracting partial checks from $config_file..."
+          awk '
+          /^partialDeploymentAlertPolicyChecks:/ { capture = 1; next }
+          capture {
+            if ($0 ~ /^[^[:space:]]/ && $0 != "") { capture = 0; exit }
+            print "                " $0
+          }
+          ' "$config_file" > partial_checks.tmp
+          
+          # Insert the checks where the placeholder is located and remove the placeholder
+          sed -i '/partialDeploymentAlertPolicyChecks/r partial_checks.tmp' release/clouddeploy/delivery-pipeline.yaml
+          sed -i '/partialDeploymentAlertPolicyChecks/d' release/clouddeploy/delivery-pipeline.yaml
+          rm -f partial_checks.tmp
+        fi
         
         # Populate variables in target file
         target_file="release/clouddeploy/${env}-target.yaml"