Multiple fixes
Multiple fixes

This commit fixes the following:
* Fixed the `converge_options` within the `convergence_strategy_for` method
* Fixed `allocate_machine` method when trying to get the `bootstrap_options`
* Fixed the `AWS.config` attribute to pick the right `@region`
* Implemented a `connect_to_machine` method

Conflicts:
	lib/chef/provisioning/aws_driver/driver.rb

Jimflip/chef-provisioning-aws,avleen/chef-provisioning-aws,chef/chef-provisioning-aws,tarak/chef-provisioning-aws,ii/chef-provisioning-aws,Fodoj/chef-provisioning-aws,msonnabaum/chef-provisioning-aws,joroh/chef-provisioning-aws,RyanJarv/chef-provisioning-aws,redterror/chef-provisioning-aws,chef/chef-provisioning-aws,nitheeshp/chef-provisioning-aws,dblessing/chef-provisioning-aws,getaroom/chef-provisioning-aws,Mindera/chef-provisioning-aws,brumschlag/chef-provisioning-aws,dcallao/chef-provisioning-aws,mikenairn/chef-provisioning-aws,bbbco/chef-provisioning-aws,miguelcnf/chef-provisioning-aws,dawudrahmanaqovia/chef-provisioning-aws