Set default region to 'eu-central-1' (#169)
Set default region to 'eu-central-1' (#169)

Per VELOCITY-947
comptelfwd/dcos-commons,tobilg/dcos-commons,comptelfwd/dcos-commons,tobilg/dcos-commons,vishnu2kmohan/dcos-commons,mesosphere/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,tobilg/dcos-commons,tobilg/dcos-commons,adragomir/dcos-commons,adragomir/dcos-commons,comptelfwd/dcos-commons,vishnu2kmohan/dcos-commons,adragomir/dcos-commons,comptelfwd/dcos-commons,tobilg/dcos-commons,mesosphere/dcos-commons,adragomir/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,mesosphere/dcos-commons,mesosphere/dcos-commons,vishnu2kmohan/dcos-commons,adragomir/dcos-commons,mesosphere/dcos-commons