Add cfme_manageiq_evm_pass_reset.rb

This module exploits a SQL injection vulnerability in the "explorer"
action of "miq_policy" controller of the Red Hat CloudForms Management
Engine 5.1 (ManageIQ Enterprise Virtualization Manager 5.0 and earlier)
by changing the password of the target account to the specified
password.
Add missing disclosure date as per review
Remove EzCrypto-related code as per review
Add the bcrypt gem

The bcrypt gem is needed for some admin modules (i.e.,
cfme_manageiq_evm_pass_reset.rb). For more information, see
https://github.com/rapid7/metasploit-framework/pull/2744.
Update module to use added bcrypt gem
Fix bcrypt gem name
Add the Gemfile.lock file
Clean cfme_manageiq_evm_pass_reset
Land #2744, @rcvalle module for CVE-2013-2050