fix version of olam containers

Author: William Graef

olam/templates/execution_environment.yml.j2

@@ -13,9 +13,9 @@ dependencies:
 
 images:
  base_image:
-  name: container-registry.oracle.com/oracle_linux_automation_manager/olam-ee:latest
+  name: container-registry.oracle.com/oracle_linux_automation_manager/olam-ee:2.2
  builder_image:
-  name: container-registry.oracle.com/oracle_linux_automation_manager/olam-builder:latest
+  name: container-registry.oracle.com/oracle_linux_automation_manager/olam-builder:2.2
 
 additional_build_steps:
   prepend: |