Add retry mechanism for Opensearch Interactions

[meghana-rajashekar]

1. Added retry mechanism while Initalizing Opensearch client which happens in the init() of crypto controller and whenever a config update changes the credentials
2. Retry mechanism to retry any Opensearch API calls which executes the API and return the rsponse and an error
3. Made necessary changes across the code base to accept this retry
4. Update log print on utilities/utilities.go
5. Update method descriptions