MB-48248 Don't return magma-specific props for non-magma buckets

We'll no longer return magma-specific properties, e.g.
fragmentationPercentage or memQuotaRatio) for non-magma buckets.

Change-Id: Ifdff43dab49e5192770b8b5ca719fbd0fa6df1e6
Reviewed-on: http://review.couchbase.org/c/ns_server/+/162120
Tested-by: Steve Watanabe <steve.watanabe@couchbase.com>
Well-Formed: Build Bot <build@couchbase.com>
Reviewed-by: Abhijeeth Nuthan <abhijeeth.nuthan@couchbase.com>

src/menelaus_web_buckets.erl

@@ -298,9 +298,7 @@ build_dynamic_bucket_info(InfoLevel, Id, BucketConfig, Ctx) ->
       {storageBackend, ns_bucket:storage_backend(BucketConfig)},
       {durabilityMinLevel, build_durability_min_level(BucketConfig)},
       build_pitr_dynamic_bucket_info(BucketConfig),
-      {fragmentationPercentage,
-       proplists:get_value(frag_percent, BucketConfig, 50)},
-      {memQuotaRatio, proplists:get_value(mem_quota_ratio, BucketConfig, 10)},
+      build_magma_bucket_info(BucketConfig),
       {conflictResolutionType,
        ns_bucket:conflict_resolution_type(BucketConfig)}],
      case cluster_compat_mode:is_enterprise() of
@@ -330,6 +328,17 @@ build_pitr_dynamic_bucket_info(BucketConfig) ->
              {pitrMaxHistoryAge, ns_bucket:pitr_max_history_age(BucketConfig)}]
     end.
 
+build_magma_bucket_info(BucketConfig) ->
+    case ns_bucket:storage_mode(BucketConfig) of
+        magma ->
+            [{fragmentationPercentage, proplists:get_value(frag_percent,
+                                                           BucketConfig, 50)},
+             {memQuotaRatio, proplists:get_value(mem_quota_ratio,
+                                                 BucketConfig, 10)}];
+        _ ->
+            []
+    end.
+
 handle_sasl_buckets_streaming(_PoolId, Req) ->
     LocalAddr = menelaus_util:local_addr(Req),