Change how we disable insecure request warnings
Change how we disable insecure request warnings

* The existing code apparently causes problems with very new requests
  library, and the "newer" way seems OK on RHEL7 and Ubuntu
  16.04 and 17.10 at least

Signed-off-by: Rob Adams <dc34e1981fc17062c98433ad1bfcab20a4e3a66c@readams.net>

noironetworks/aci-containers,noironetworks/aci-containers