Add cinder to allowed_rpc_exception_modules.
Add cinder to allowed_rpc_exception_modules.

When configuring Cinder I would rather not have to specify
allowed_rpc_exception_modules in my default config. This
patch updates the default list of allowed_rpc_exception_modules to
include cinder.exception.

Change-Id: Ib7babb1ceb13e86c555947ebc869b50afd7e9b49

JioCloud/oslo-incubator,JioCloud/oslo-incubator,JioCloud/oslo-incubator