Fix package deps

[Thulium-Drake]

Pypi dependency Ruamel has changed some things that require the presence of Python headers as well as GCC

[softwarefactory-project-zuul[bot]]

Build succeeded.

:heavy_check_mark: ara-role-api-distributed-sqlite SUCCESS in 13m 33s :heavy_check_mark: ara-role-api-mysql SUCCESS in 13m 07s :heavy_check_mark: ara-role-api-postgresql SUCCESS in 12m 20s :heavy_check_mark: ara-role-api-gunicorn-nginx SUCCESS in 11m 41s :heavy_check_mark: ara-role-api-gunicorn-nginx-client-cert SUCCESS in 10m 34s :x: ara-role-api-fedora-packages FAILURE in 5m 09s (non-voting)

[dmsimard]

recheck

[softwarefactory-project-zuul[bot]]

Build failed.

:x: ara-role-api-distributed-sqlite FAILURE in 12m 09s :x: ara-role-api-mysql POST_FAILURE in 13m 17s :heavy_check_mark: ara-role-api-postgresql SUCCESS in 13m 36s :heavy_check_mark: ara-role-api-gunicorn-nginx SUCCESS in 10m 23s :heavy_check_mark: ara-role-api-gunicorn-nginx-client-cert SUCCESS in 11m 15s :x: ara-role-api-fedora-packages FAILURE in 5m 35s (non-voting)

[Thulium-Drake]

recheck

[softwarefactory-project-zuul[bot]]

Build succeeded.

:heavy_check_mark: ara-role-api-distributed-sqlite SUCCESS in 11m 58s :heavy_check_mark: ara-role-api-mysql SUCCESS in 12m 21s :heavy_check_mark: ara-role-api-postgresql SUCCESS in 12m 20s :heavy_check_mark: ara-role-api-gunicorn-nginx SUCCESS in 9m 58s :heavy_check_mark: ara-role-api-gunicorn-nginx-client-cert SUCCESS in 10m 19s :x: ara-role-api-fedora-packages FAILURE in 4m 58s (non-voting)

[Thulium-Drake]

I don't think we need to merge this one, as you fixed a lot of these issues in #71

Ping me if you feel it should still be tackled