Added link to CCCL issue under bug fix listed in release notes

Author: amudukutore

docs/RELEASE-NOTES.rst

@@ -30,7 +30,7 @@ Bug Fixes
 * :issues:`460` - Remove risk that pools will update with wrong members after a node update (NodePort mode).
 * :issues:`428` - Controller writes unnecessary updates when no config changes occurred.
 * :issues:`506` - Controller stops updating BIG-IP after an exception occurs in the python driver.
-* Corrected a comparison problem in CCCL that caused unnecessary updates for BIG-IP Virtual Server resources.
+* :cccl-issue:`198` - Corrected a comparison problem in CCCL that caused unnecessary updates for BIG-IP Virtual Server resources.
 
 Limitations
 ```````````

docs/conf.py

@@ -90,6 +90,8 @@
 
 # External links
 extlinks = {'issues': ('https://github.com/F5Networks/k8s-bigip-ctlr/issues/%s',
+                      'issue '),
+                      'cccl-issue': ('https://github.com/f5devcentral/f5-cccl/issues/%s',
                       'issue ')}
 
 # Substitutions