SHARMAN-3885: Self-Help page was not loading when WAN is Down

[rajkamal-cv]

Reason for change: The code changes in #123
are not meant for 'Sky' Gateways. Skip the respective models
Test Procedure: Check resolv.conf without RF and ensure brlan0 IP is updated Risks: Low
Priority: P1

[rajkamal-cv]

1. Is this a Bug or a User Story (US)?

SHARMAN-3885 is a bug

2. If it is a User Story:
   • Have all dependent PRs from other components been listed (if any)?
   • Does the commit message include both the User Story ticket and the Subtask ticket?
   • Will be all changes related to the User Story squashed and merged in a single commit?
   • Has the PR been raised only after completing all changes for the User Story (no partial changes)?
   • Has code development for the User Story been completed?
     • If yes, has the Gerrit topic or list of all dependent PRs across components (including meta-layer changes) been shared?
3. Is there a validation log available in the Jira ticket for verifying builds with the updated generic-srcrev.inc across all platforms?
   • If yes, have the links to validation comments been shared?

Yes. Gerrit verification buids ( https://gerrit.teamccp.com/#/c/941773/ ) was triggered and the results are available here - https://ccp.sys.comcast.net/browse/SHARMAN-3885?focusedId=24308442&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-24308442