Flesh out Mdm::Cred Factory

MSP-9950
Version bump
Merge branch 'master' into feature/MSP-9950/migrate-old-creds

Upstream merge

Conflicts:
	lib/metasploit_data_models/version.rb
Merge pull request #73 from trevrosen/feature/MSP-9950/migrate-old-creds

Feature/msp 9950/migrate old creds