2e5ffd27df
1. Move router size tests from test_router_types.py to test_router_sizes.py 2. Add "change router_size" tests Begins with Mitaka, nsxv can change router's size. 3. Use NSX-v backend to validate router's size is changed correctly. 4. Add CONF.nsxv.create_router_http_timeout to set the http_timeout for router client. 5. Due to bug#1716695 - keep creating routers. This fix creates its own router client to change the retry time from default 60 to CONF.nsxv.create_router_http_timeout. Plese refer to docstr of class RouterSizeBaseTest for detail. Change-Id: Iaf07f78db898c1bf94dda5d716eae9ef6e0bcc2c