Use the new bcrypt gem, not bcrypt-ruby

See the change upstream at:

273946f2ba

Reported by @ZeroChaos

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 # Need 3+ for ActiveSupport::Concern
 gem 'activesupport', '>= 3.0.0'
 # Needed for some admin modules (cfme_manageiq_evm_pass_reset.rb)
-gem 'bcrypt-ruby'
+gem 'bcrypt'
 # Needed for some admin modules (scrutinizer_add_user.rb)
 gem 'json'
 # Needed by msfgui and other rpc components

Gemfile.lock

@@ -13,7 +13,7 @@ GEM
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
     arel (3.0.2)
-    bcrypt-ruby (3.1.2)
+    bcrypt (3.1.7)
     builder (3.0.4)
     database_cleaner (1.1.1)
     diff-lcs (1.2.4)
@@ -63,7 +63,7 @@ PLATFORMS
 DEPENDENCIES
   activerecord
   activesupport (>= 3.0.0)
-  bcrypt-ruby
+  bcrypt
   database_cleaner
   factory_girl (>= 4.1.0)
   fivemat (= 1.2.1)

LICENSE

@@ -176,7 +176,7 @@ Files: arel
 Copyright: 2007-2010 Nick Kallen, Bryan Helmkamp, Emilio Tagua, Aaron Patterson
 License: MIT
 
-Files: bcrypt-ruby
+Files: bcrypt
 Copyright: 2007-2011 Coda Hale
 License: MIT