added release notes for 4.0.6 rc2 (#612)
added release notes for 4.0.6 rc2 (#612)

* added release notes for 4.0.6 rc2

Signed-off-by: Rafael Martins <e932aff117fa9c06608489444840300abe9898ec@redhat.com>

rafaelmartins/ovirt-site,rafaelmartins/ovirt-site,rafaelmartins/ovirt-site,rafaelmartins/ovirt-site