jsdom plugin is not correctly set up to handle bundled scenarios

[matt-gadd]

Bug
The jsdom plugin in cli-test-intern is not currently implemented correctly for bundles (ie using dojo test -c local).

It imports both @dojo/shim and @dojo/has modules to set things on, but those modules have no correlation with what is actually bundled. We should likely favour setting things directly on the global in node here (given the jsdom plugin is only used in a node env anyway). I'm not sure how important the has flag for jsdom is either so perhaps we can drop that?

It also seems like due to our global implementation in dojo/shim (which checks for a global first over a window) and the way we are just attaching the jsdom window to global.window results in this not working. To fix we could either change our global implementation to test for window first, or we have to spread the jsdom window over the node global. If we are going to do the latter we should consider https://github.com/rstacruz/jsdom-global perhaps