allow a Wildcard Realm Type

[thelightcosine]

Not much here. Just adds a Wildcard Realm type for when we don't know or acre what type of Realm it is.

Verification Steps

• [x] bundle install

  rake spec

• [x] rake spec
• [x] VERIFY no failures

  Post-merge Steps

Perform these steps prior to pushing to master or the build will be broke on master.

Version

• [x] Edit lib/metasploit/model/version.rb
• [x] Remove PRERELEASE and its comment as PRERELEASE is not defined on master.

  Gem build

• [x] gem build *.gemspec
• [x] VERIFY the gem has no '.pre' version suffix.

  RSpec

• [x] rake spec
• [x] VERIFY version examples pass without failures

  Commit & Push

• [x] git commit -a
• [x] git push origin master

  Release

  JRuby

• [x] rvm use jruby@metasploit-model
• [x] rm Gemfile.lock
• [x] bundle install
• [x] rake release

  MRI Ruby

• [x] rvm use ruby-1.9.3@metasploit-model
• [x] rm Gemfile.lock
• [x] bundle install
• [x] rake release

[coveralls]

Coverage increased (+0.11%) when pulling ea3f8790634138a629ce0f71065eac8de3c65004 on feature/MSP-11246/wildcard-realm-type into 0eb152517a5138fd5ed1e031e5b5ae4f174a6b15 on master.