kubernetes: Handle python3 stream connections.
kubernetes: Handle python3 stream connections.

Make changes to stream handling according to documentation here:
http://docs.python-requests.org/en/master/user/advanced/#streaming-requests

Signed-off-by: Gurucharan Shetty <a1872e333d0e52644f6125da2276530f7ebe5e77@ovn.org>

shettyg/ovn-kubernetes,shettyg/ovn-kubernetes,shettyg/ovn-kubernetes