[openshift] Don't collect all of /etc/openshift

Reduce glob based collection and aim at more specific paths.

Signed-off-by: Pep Turró Mauri <pep@redhat.com>
[openshift] Improve password obfuscation

Rewrite MCollective passwords and be a bit more flexible with
white space around =.

Also provide examples of strings for the string substitutions.

Related: #323.

Signed-off-by: Pep Turró Mauri <pep@redhat.com>