Readded depend debops.mariadb_server to debops.owncloud test.
Readded depend debops.mariadb_server to debops.owncloud test.

Fixes #564.

drybjed/test-suite,drybjed/test-suite,drybjed/test-suite,debops/test-suite,drybjed/test-suite,ganto/test-suite,debops/test-suite,ganto/debops-test-suite,ganto/test-suite,debops/test-suite,debops/test-suite,ganto/debops-test-suite,ganto/debops-test-suite,ganto/test-suite,ganto/test-suite,debops/test-suite,ganto/debops-test-suite,drybjed/test-suite,ganto/test-suite,ganto/debops-test-suite