Following the removal of service [1], pod [2] and container [3], remove
COE specific object ReplicationController.
This change also removes k8s_conductor.
[1] I4f06bb779caa0ad369a2b96b4714e1bf2db8acc6
[2] I8c2499ccb97aae39d80868ce02fbef292d762c10
[3] I288fa7a9717519b1ae8195820975676d99b4d6d2
Change-Id: Ica100c8d2dfdd7dc709feb1f5cdc5a3f3d6c7318
Partially-Implements: blueprint delete-container-endpoint
Partially-Implements: blueprint bay-drivers