Changed name to neutron-agent-dhcp in the command chmod and crm

Changed name to neutron-agent-dhcp in the command chmod and crm
Fixed the underscore error in the resource file at parameter plugin_config

Closes-bug: 1316006

Change-Id: I8f92ef7ee9eb04dbfa9c6f091186aa13bc5ed668
Merge "Changed name to neutron-agent-dhcp in the command chmod and crm"