Regenerate openshift.sh to drop bogus settings

Commit 46d44204ef21d567094ee123c171cac0dccabda9 included a version of
openshift.sh that set CONF_DOMAIN and CONF_INSTALL_COMPONENTS, overriding
values provided when invoking the script.  The openshift.ks in the same
commit did not have this problem.

This commit regenerates openshift.sh so that it can be useful once again
without manually editing the file.