Comment 2 for bug 1957081

sorry, one string without ;\
fixed version
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docker exec -itu root mistral_api pip3 install mistral-extra; \
docker exec -itu root mistral_engine pip3 install mistral-extra; \
docker exec -itu root mistral_executor pip3 install mistral-extra; \
docker exec -itu root mistral_event_engine pip3 install mistral-extra; \
docker restart mistral_api mistral_engine mistral_executor mistral_event_engine; \
sleep 10; \
docker exec -itu root mistral_api mistral-db-manage --config-file /etc/mistral/mistral.conf --openstack_actions_mapping_path /var/lib/kolla/venv/lib/python3.8/site-packages/mistral_extra/actions/openstack/mapping.json populate_actions; \
docker exec -itu root mistral_api mistral-db-manage --config-file /etc/mistral/mistral.conf --openstack_actions_mapping_path /var/lib/kolla/venv/lib/python3.8/site-packages/mistral_extra/actions/openstack/mapping.json populate
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