Add GCP Batch

Author: aednichols

.github/workflows/integration_tests.yml

@@ -44,9 +44,18 @@ jobs:
           - build_type: centaurPapiV2beta
             build_mysql: 8.4
             friendly_name: Centaur Papi V2 Beta with MySQL 8.4 (aspirational Terra production)
+          - build_type: centaurGcpBatch
+            build_mysql: 5.6
+            friendly_name: Centaur GCP Batch with MySQL 5.6
           - build_type: centaurGcpBatch
             build_mysql: 5.7
             friendly_name: Centaur GCP Batch with MySQL 5.7
+          - build_type: centaurGcpBatch
+            build_mysql: 8.0
+            friendly_name: Centaur GCP Batch with MySQL 8.0
+          - build_type: centaurGcpBatch
+            build_mysql: 8.4
+            friendly_name: Centaur GCP Batch with MySQL 8.4
           - build_type: centaurPapiV2betaRestart
             build_mysql: 5.7
             friendly_name: Centaur Papi V2 Beta (restart)