Fix install awx-task init-database container args

If the database setup is in some way wrong, the `wait-for-migrations` command inside the `init-database` container runs infinitely and can't be stopped by kubernetes.
The `wait-for-migrations` command needs to be started by `dump-init` command. The `dump-init` command is the default ENTRYPOINT of the used container image.
See: https://github.com/ansible/awx/blob/devel/tools/ansible/roles/dockerfile/templates/Dockerfile.j2#L321

Author: JoelKle

roles/installer/templates/deployments/task.yaml.j2

@@ -97,7 +97,7 @@ spec:
           image: '{{ _image }}'
           imagePullPolicy: '{{ image_pull_policy }}'
           resources: {{ init_container_resource_requirements }}
-          command:
+          args:
             - /bin/sh
             - -c
             - wait-for-migrations