fixes #426 expose BMC information in foreman UI

Signed-off-by: Ohad Levy <ohadlevy@gmail.com>

This patch also adds an abstracted power management class for both VM
and BM

fixes #2253 adds openstack floating ip support

fixes #1947 - wrong notice pressing the power on/off button for vmware hosts

• now using the real state from the server
• also made sure that we validate power on/off requests
• ensured our fog server objects respond to to_s and to state

fixes #1944 - Listing VMWare virtual machines under Computer resources is slow.

fixes #1589 provisioning vmware support

fixes #1876 fix display of instance name and dns for AWS Use instance number when instances name is not set. Use private DNS entry when public dns is not available

[refactor] - simple method to display ec2 instance name, instead of using tags everywhere

basic openstack support

fixes #1667 - restrcutre fog extensions code