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
Merge "Define LOG globally in baremetal_deploy_helper"