Investigate okHttp cookie and remove NewCookie

[vivekmuniyandi]

Remove the NewCookie and replace it with OKhttp cookie because NewCookie requires an implementation of RuntimeDelegate class and we have a mock implementation which returns null. For customers who use a Jersey client, the client tries to find an implementation of RuntimeDelegate and our implementation comes up thereby throwing NullPointerException.

Investigate on OKhttp cookie and replace NewCookie in order to remove the mock implementation.

[vivekmuniyandi]

QA:

There is nothing new added in this. Just that the underlying implementation of Cookie has been moved from NewCookie to Okhttp cookie thus removing the need for the Mock RuntimeDelegation class. Have removed that as well.