VOL-264: REST Channel ( External REST Client <==> Chameleon) needs to be Secured

These are voltha itest and documentation updates after enforcing a https based
REST server implementation from the chameleon.

The chameleon related changes are already available as part of another review
https://gerrit.opencord.org/#/c/4478/ .

Change-Id: Icd585bb0403524c2e7a0f46fddcf3046876042b4
diff --git a/tests/itests/ofagent/test_ofagent_multicontroller_failover.py b/tests/itests/ofagent/test_ofagent_multicontroller_failover.py
index 89228a8..27eb41e 100644
--- a/tests/itests/ofagent/test_ofagent_multicontroller_failover.py
+++ b/tests/itests/ofagent/test_ofagent_multicontroller_failover.py
@@ -49,9 +49,9 @@
     onos1_ip="docker inspect --format '{{ .NetworkSettings.Networks.compose_default.IPAddress }}' onos1",
     onos2_ip ="docker inspect --format '{{ .NetworkSettings.Networks.compose_default.IPAddress }}' onos2",
     onos3_ip="docker inspect --format '{{ .NetworkSettings.Networks.compose_default.IPAddress }}' onos3",
-    add_olt='''curl -s -X POST -d '{"type": "simulated_olt", "mac_address": "01:0c:e2:31:40:00"}' \
-               http://localhost:8881/api/v1/local/devices''',
-    enable_olt="curl -s -X POST http://localhost:8881/api/v1/local/devices/",
+    add_olt='''curl -k -s -X POST -d '{"type": "simulated_olt", "mac_address": "01:0c:e2:31:40:00"}' \
+               https://localhost:8881/api/v1/local/devices''',
+    enable_olt="curl -k -s -X POST https://localhost:8881/api/v1/local/devices/",
     onos1_devices="curl -u karaf:karaf  http://localhost:8181/onos/v1/devices",
     onos2_devices="curl -u karaf:karaf  http://localhost:8182/onos/v1/devices",
     onos3_devices="curl -u karaf:karaf  http://localhost:8183/onos/v1/devices")