Revert "Merge remote-tracking branch 'banjiewen/stale-stable-update'"

This reverts commit 508122c52731a9eac3e83f8d727f2355f019fe1f, reversing
changes made to d68a00fdeba9113bd1a3dd41d8e546b05bb2e533.
diff --git a/src/fabric_view.erl b/src/fabric_view.erl
index 01291a9..a766348 100644
--- a/src/fabric_view.erl
+++ b/src/fabric_view.erl
@@ -302,13 +302,14 @@
 index_of(X, [_|Rest], I) ->
     index_of(X, Rest, I+1).
 
-get_shards(DbName, #mrargs{stable=true}) ->
+get_shards(DbName, #mrargs{stale=Stale})
+  when Stale == ok orelse Stale == update_after ->
     mem3:ushards(DbName);
-get_shards(DbName, #mrargs{stable=false}) ->
+get_shards(DbName, #mrargs{stale=false}) ->
     mem3:shards(DbName).
 
 maybe_update_others(DbName, DDoc, ShardsInvolved, ViewName,
-    #mrargs{update=lazy} = Args) ->
+    #mrargs{stale=update_after} = Args) ->
     ShardsNeedUpdated = mem3:shards(DbName) -- ShardsInvolved,
     lists:foreach(fun(#shard{node=Node, name=ShardName}) ->
         rpc:cast(Node, fabric_rpc, update_mrview, [ShardName, DDoc, ViewName, Args])