<install> bug 1060235: put parse_cartridges in set_defaults

https://bugzilla.redhat.com/show_bug.cgi?id=1060235

parse_cartridges is now run as part of the initialization of parameters
which is done in set_defaults. That way the results are available to
every action, enabling oo-install to continue splitting the install into
multiple invocations without calling out parse_cartridges.
Revert "oo-install: Call parse_cartridges action"

This reverts commit 52b18114b9b551630b1b52f95252786ba675d750.
The fix should go in openshift.sh