Increase timeout for loading archives in tests.

Test: ArchivesProviderTest.testOpen_Failure is flaky
Bug: 35920530
Change-Id: Ic7fbd4a0ea0e37dec039a61eee4c751bd96d877e
diff --git a/tests/unit/com/android/documentsui/archives/ArchivesProviderTest.java b/tests/unit/com/android/documentsui/archives/ArchivesProviderTest.java
index 820b6ce..db9e868 100644
--- a/tests/unit/com/android/documentsui/archives/ArchivesProviderTest.java
+++ b/tests/unit/com/android/documentsui/archives/ArchivesProviderTest.java
@@ -116,7 +116,7 @@
             });
         }
 
-        latch.await(3, TimeUnit.SECONDS);
+        latch.await(30, TimeUnit.SECONDS);
         {
             final Cursor cursor = resolver.query(childrenUri, null, null, null, null, null);
             assertNotNull("Cursor must not be null. File not found?", cursor);
@@ -168,7 +168,7 @@
             });
         }
 
-        latch.await(3, TimeUnit.SECONDS);
+        latch.await(30, TimeUnit.SECONDS);
         {
             final Cursor cursor = resolver.query(childrenUri, null, null, null, null, null);
             assertNotNull("Cursor must not be null. File not found?", cursor);