Define LOG globally in baremetal_deploy_helper

Since LOG = getLogger() has been moved from the global scope
to the function scope (main), the rest of the module could
not find LOG. This patch makes LOG global again.

Fixes bug 1165262

Change-Id: I2607802dcbed64135f75011a02ebce95519e4ea1
Add an extension to show the mac address of a ip in server(s)

This extension adds the OS-EXT-IPS-MAC:mac_addr param
so that users can associate the mac address to the ip of the server in
one API call.

Implement bp: os-ext-ips-mac-api-extension
DocImpact

Change-Id: I01d0b3aa804b5218853a4bb568c85e31b87d04e4
Signed-off-by: Zhi Yan Liu <zhiyanl@cn.ibm.com>
Merge "Define LOG globally in baremetal_deploy_helper"
Merge "Add an extension to show the mac address of a ip in server(s)"