MB-50306: Set expiration_warning_days to 30 by default

Change-Id: I76fca92c04acc2f56f0be841761dfe93bf5cd39b
Reviewed-on: https://review.couchbase.org/c/ns_server/+/172748
Well-Formed: Build Bot <[email protected]>
Reviewed-by: Steve Watanabe <[email protected]>
Tested-by: Timofey Barmin <[email protected]>

Author: timofey-barmin

src/ns_server_cert.erl

@@ -1198,7 +1198,7 @@ get_warnings() ->
 
 expiration_warnings(CertProps) ->
     Now = calendar:datetime_to_gregorian_seconds(calendar:universal_time()),
-    WarningDays = ns_config:read_key_fast({cert, expiration_warning_days}, 7),
+    WarningDays = ns_config:read_key_fast({cert, expiration_warning_days}, 30),
     WarningSeconds = WarningDays * 24 * 60 * 60,
     WarningThreshold = Now + WarningSeconds,