Bump ODL release version

ODL 6 bumped version to 6.2.
Without setting version, karaf is not able to install some
required features.

http://cbs.centos.org/repos/nfv7-opendaylight-6-release/x86_64/os/Packages/

Change-Id: I12101accff2f76dee9b145d2d6dcab7d8a15719b
Closes-Bug: #1740043

ansible/group_vars/all.yml

@@ -699,7 +699,7 @@ vmware_vcenter_insecure: "True"
 ######################
 # OpenDaylight
 ######################
-opendaylight_release: "0.6.1-Carbon"
+opendaylight_release: "0.6.2-Carbon"
 opendaylight_mechanism_driver: "opendaylight_v2"
 opendaylight_l3_service_plugin: "odl-router_v2"
 opendaylight_acl_impl: "learn"