rubygem-openshift-origin-common: Req. parseconfig

rubygem-openshift-origin-common.spec: Add a Requires: on the parseconfig
rubygem because oo-diagnostics uses parseconfig.

This commit fixes bug 1083334.
Merge pull request #5138 from Miciah/rubygem-openshift-origin-common-require-parseconfig

Merged by openshift-bot