MB-51836 Don't pass number of vbuckets at startup (eventing)

As the number of vbuckets for a bucket is no longer fixed we cannot pass
the value in the startup arguments to eventing. Different buckets may have
different number of vbuckets. Instead eventing obtains the info via a rest
interface.

Change-Id: I6cde1ddae2606166b83e3f5180b2f59060db4057
Reviewed-on: https://review.couchbase.org/c/ns_server/+/175375
Well-Formed: Build Bot <[email protected]>
Tested-by: Build Bot <[email protected]>
Tested-by: Steve Watanabe <[email protected]>
Reviewed-by: Navdeep S Boparai <[email protected]>

Author: stevewatanabe

src/ns_ports_setup.erl

@@ -563,9 +563,7 @@ goport_args(eventing, Config, _Cmd, NodeUUID) ->
 
         ["-dir=" ++ filename:join(EvDir, "@eventing"),
          "-uuid=" ++ NodeUUID,
-         "-diagdir=" ++ path_config:minidump_dir(),
-         %% XXX: MB-51836 Remove -vbuckets
-         "-vbuckets=" ++ integer_to_list(ns_bucket:get_default_num_vbuckets())];
+         "-diagdir=" ++ path_config:minidump_dir()];
 
 goport_args(cbas, Config, Cmd, NodeUUID) ->
     CBASDirs = [filename:join([Token], "@analytics") ||