Add mailmap entry

Add mailmap entry for my email address

Change-Id: Ia46c28c86ef3f440556b1b027d2bf0a7f3e721c5

.mailmap

@@ -44,6 +44,7 @@
 <lorin@nimbisservices.com> <lorin@isi.edu>
 <mikal@stillhq.com> <michael.still@canonical.com>
 <mordred@inaugust.com> <mordred@hudson>
+<morgan.fainberg@gmail.com> <m@metacloud.com>
 <mr.alex.meade@gmail.com> <hatboy112@yahoo.com>
 <mr.alex.meade@gmail.com> <alex.meade@rackspace.com>
 <naveedm9@gmail.com> <naveed.massjouni@rackspace.com>