NCCLIENT_REPO is using the wrong url

NCCLIENT_REPO value in lib/neutron_plugins/cisco is pointing to a repo
that does not exist. This fix corrects the url.

Closes-Bug #1286302

Change-Id: I42db0b3f7a4bbf5d1d053e3da8b4fbb67d47de94
diff --git a/lib/neutron_plugins/cisco b/lib/neutron_plugins/cisco
index 7728eb1..a1b089e 100644
--- a/lib/neutron_plugins/cisco
+++ b/lib/neutron_plugins/cisco
@@ -23,7 +23,7 @@
 # Specify ncclient package information
 NCCLIENT_DIR=$DEST/ncclient
 NCCLIENT_VERSION=${NCCLIENT_VERSION:-0.3.1}
-NCCLIENT_REPO=${NCCLIENT_REPO:-${GIT_BASE}/CiscoSystems/ncclient.git}
+NCCLIENT_REPO=${NCCLIENT_REPO:-git://github.com/CiscoSystems/ncclient.git}
 NCCLIENT_BRANCH=${NCCLIENT_BRANCH:-master}
 
 # This routine put a prefix on an existing function name