Remove unneeded roles from the installer directory

tools/docker-compose/ansible/roles/migrate/tasks/migrate-from-local-docker.yml

@@ -4,6 +4,7 @@
 - name: Remove awx_postgres to ensure consistent start state
   shell: |
     docker rm -f awx_postgres
+  ignore_errors: true
 
 - name: Start Local Docker database container
   docker_compose:
@@ -13,6 +14,10 @@
     state: present
     recreate: always
 
+- name: Wait for postgres to initialize
+  wait_for:
+    timeout: 3
+
 - name: Database dump to local filesystem
   shell: |
     docker-compose -f {{ old_docker_compose_dir }}/docker-compose.yml exec -T postgres pg_dumpall -U {{ pg_username }} > awx_dump.sql