Use canonical name of dashboard_xml_rpc_handler, fix test
Use canonical name of dashboard_xml_rpc_handler, fix test

The test for RequestContext is more complicated in recent django versions,
response.context is a list of context objects.


Linaro/lava-server,Linaro/lava-server,OSSystems/lava-server,OSSystems/lava-server,Linaro/lava-server,Linaro/lava-server,OSSystems/lava-server