Not able to log in to Azure AD auth enabled setup.

[sangeethah]

Rancher server version - Built from master - Nov 30

Steps to reproduce the problem:
Enable Azure AD auth.
Log out and log in to rancher server as Azure AD admin user.
User is presented with "ServerError 500"

Rancher server logs:

2018/11/30 23:41:20 [DEBUG] [AZURE_PROVIDER] Started token swap with AzureAD
2018/11/30 23:41:20 [ERROR] API error response 500 for POST /v3-public/azureADProviders/azuread?action=login. Cause: adal: Refresh request failed. Status Code = '401'. Response body: {"error":"invalid_client","error_description":"AADSTS70002: Error validating credentials. AADSTS50012: Invalid client secret is provided.\r\nTrace ID: **\r\nCorrelation ID:***\r\nTimestamp: 2018-11-30 23:41:20Z","error_codes":[70002,50012],"timestamp":"2018-11-30 23:41:20Z","trace_id":"**","correlation_id":"**"}

[sangeethah]

Rancher server version - Built from master - Dec 5

Enable Azure AD auth.
Log out and log in to rancher server as Azure AD admin user. Able to log in successfully.

Also able to login successfully as other Azure AD users who have access to rancher server.