Silenced two more GMock warnings about shutdown expectations.

In these tests:
* MasterTest.OrphanTasks
* StatusUpdateManagerTest.LatestTaskState

Review: https://reviews.apache.org/r/42673/

Author: neilconway

src/tests/master_tests.cpp

@@ -2379,6 +2379,9 @@ TEST_F(MasterTest, OrphanTasks)
   orphanTasks = state.values["orphan_tasks"].as<JSON::Array>();
   EXPECT_EQ(0u, orphanTasks.values.size());
 
+  EXPECT_CALL(exec, shutdown(_))
+    .Times(AtMost(1));
+
   // Cleanup.
   driver.stop();
   driver.join();

src/tests/status_update_manager_tests.cpp

@@ -834,6 +834,9 @@ TEST_F(StatusUpdateManagerTest, LatestTaskState)
   ASSERT_EQ(TASK_FINISHED,
             statusUpdateMessage2.get().update().latest_state());
 
+  EXPECT_CALL(exec, shutdown(_))
+    .Times(AtMost(1));
+
   driver.stop();
   driver.join();
 

support/vote.sh

@@ -10,7 +10,7 @@ set -e
 . $(dirname ${0})/atexit.sh
 
 # Use colors for errors.
-. $(dirname ${0})/colors.sh
+#. $(dirname ${0})/colors.sh
 
 test ${#} -eq 2 || \
   { echo "Usage: `basename ${0}` [version] [candidate]"; exit 1; }