oo-install: Call parse_cartridges action

Add parse_cartridges to INSTALL_ACTIONS in the launcher.

After commit e6cd65df01ee1cbdf837d49b4a199506a240d95f which added the
CONF_CARTRIDGES option to openshift.ks/openshift.sh, it is necessary to
invoke the parse_cartridges action before calling configure_repos and
install_cartridges.

This commit fixes bug 1060235.
Merge pull request #284 from Miciah/oo-install-call-parse_cartridges-action

oo-install: Call parse_cartridges action