Fix Ebtables class

Change-Id: Ib5444e0ecace0182a677b732dae54ea47c9888bc
Fix http file pep8

Change-Id: I0df7b95e834208a07c7c5d74a65d0cce3e8e67e3
add ENV_NAME with default to settings

Change-Id: Ifc4b13611308c653f246de2a18e6738f300d59d2
Fix nailgun_client

Change-Id: Iae65ff30fb60f6866aa1ed0294c1f9bff0bbc0e0