Update the ODL support to Helium SR1.

This commit updates the default ODL package to be tested with to the
first stable release of Helium. Critically, this includes ODL fixes
for some IPV6 issues.

Change-Id: I4eaa52a8baffdcc3a5e74cabca2f9cd7ea4ec237
diff --git a/lib/opendaylight b/lib/opendaylight
index bdebe58..831329a 100644
--- a/lib/opendaylight
+++ b/lib/opendaylight
@@ -45,16 +45,16 @@
 ODL_PASSWORD=${ODL_PASSWORD:-admin}
 
 # Short name of ODL package
-ODL_NAME=${ODL_NAME:-distribution-karaf-0.2.0-Helium}
+ODL_NAME=${ODL_NAME:-distribution-karaf-0.2.1-Helium-SR1}
 
 # <define global variables here that belong to this project>
 ODL_DIR=$DEST/opendaylight
 
 # The OpenDaylight Package, currently using 'Hydrogen' release
-ODL_PKG=${ODL_PKG:-distribution-karaf-0.2.0-Helium.zip}
+ODL_PKG=${ODL_PKG:-distribution-karaf-0.2.1-Helium-SR1.zip}
 
 # The OpenDaylight URL
-ODL_URL=${ODL_URL:-https://nexus.opendaylight.org/content/groups/public/org/opendaylight/integration/distribution-karaf/0.2.0-Helium}
+ODL_URL=${ODL_URL:-https://nexus.opendaylight.org/content/repositories/public/org/opendaylight/integration/distribution-karaf/0.2.1-Helium-SR1/}
 
 # Default arguments for OpenDaylight. This is typically used to set
 # Java memory options.