Update package lookup to check for files named BUILD.bazel before files named
BUILD.

Fixes #552.

RELNOTES[NEW]: Packages are defined in BUILD.bazel as well as BUILD files.

--
MOS_MIGRATED_REVID=138828981
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java b/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
index 18f0293..0bd57e2 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
@@ -52,6 +52,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
@@ -187,7 +188,10 @@
                     new PackageFunction(null, null, null, null, null, null, null))
                 .put(
                     SkyFunctions.PACKAGE_LOOKUP,
-                    new PackageLookupFunction(null, CrossRepositoryLabelViolationStrategy.ERROR))
+                    new PackageLookupFunction(
+                        null,
+                        CrossRepositoryLabelViolationStrategy.ERROR,
+                        ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)))
                 .put(
                     SkyFunctions.WORKSPACE_AST,
                     new WorkspaceASTFunction(TestRuleClassProvider.getRuleClassProvider()))