fix so we can get a token out of requestCookie and also added a healthcheck property

Michael Evenchickrequested to merge
minor/ADAPT-458 into master

Description of Change:

Added code so we can handle getting a token out of the requestCookie. This was needed in adapter-viptela but then not as later the token was returned in set-cookie. Figured we could support in case it comes up again. Also added a property so people can define a property for healthcheck queries. This will have to also be added into the adapter-engine as there are changes needed in individual adapters to use the property.

How to Test:

Code change tested with adapter-viptela

Ticket:

Closes ADAPT-458

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