CAPI-318: Ensure the given "user" is an object for the ForeignDC methods. Also check that "dc" argument is an object and has the expected properties.
CAPI-318: Ensure the given "user" is an object for the ForeignDC methods. Also check that "dc" argument is an object and has the expected properties.

arekinath/node-sdc-clients,misterdjules/node-sdc-clients,arekinath/node-sdc-clients,joyent/node-sdc-clients,joyent/node-sdc-clients,misterdjules/node-sdc-clients