ASTERIXDB-1493 Enable AUUID Rule on Upsert

Fix the bug that Upsert cannot use IntroduceAutogeneratedIDRule.

Change-Id: I8e7a120e48e3a734639ae3680d0237d07270ac3b
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1686
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
BAD: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@apache.org>
diff --git a/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/IntroduceAutogenerateIDRule.java b/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/IntroduceAutogenerateIDRule.java
index 5c13467..a24c6e0 100644
--- a/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/IntroduceAutogenerateIDRule.java
+++ b/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/IntroduceAutogenerateIDRule.java
@@ -99,7 +99,7 @@
         }
 
         InsertDeleteUpsertOperator insertOp = (InsertDeleteUpsertOperator) currentOp;
-        if (insertOp.getOperation() != Kind.INSERT) {
+        if (insertOp.getOperation() != Kind.INSERT && insertOp.getOperation() != Kind.UPSERT) {
             return false;
         }