Redefined default value of allowed_rpc_exception_modules
Redefined default value of allowed_rpc_exception_modules

Redefined allowed_rpc_exception_modules in ironic code since initial
setting is set in Oslo (ironic.openstack.common.rpc.__init__). This
will force RPC exception deserialization work with Ironic exceptions
instead of RemoteError.

Change-Id: Ibb10dc5d0dd58ae407980d97bd4f86ed22c7988b
Closes-Bug: #1250575

debayanray/ironic_backup,SauloAislan/ironic,naototty/vagrant-lxc-ironic,Tehsmash/ironic,NaohiroTamura/ironic,dims/ironic,bacaldwell/ironic,pshchelo/ironic,Tan0/ironic,SauloAislan/ironic,openstack/ironic,openstack/ironic,varunarya10/ironic,rdo-management/ironic,bacaldwell/ironic,redhat-openstack/ironic,JioCloud/ironic,ramineni/myironic,hpproliant/ironic,naototty/vagrant-lxc-ironic,devananda/ironic,faizan-barmawer/openstack_ironic,rackerlabs/ironic,dims/ironic,froyobin/ironic,supermari0/ironic,ionutbalutoiu/ironic,pshchelo/ironic,NaohiroTamura/ironic,ionutbalutoiu/ironic,naterh/ironic