Added cloud models and appropriate JSON fields to fix #252

[tsm1th]

Fixes bug where json fields would not be collected from the response for new cloud models. Closes #252.

Issue arises from this block of code. If class does not have the _json_field attribute set to True, then it's skipped.

pynautobot/pynautobot/core/response.py

Lines 253 to 260 in 84f28a5

	for k, v in values.items():
	if isinstance(v, dict):
	lookup = getattr(self.__class__, k, None)
	if k in ["custom_fields", "local_context_data"] or hasattr(lookup, "_json_field"):
	self._add_cache((k, v.copy()))
	setattr(self, k, v)
	continue
	if lookup:

[joewesch]

Any tests you can add that would have failed before the change (TDD)?

[tsm1th]

@joewesch - Added test and confirmed they failed prior to these changes.