Make PackageFactoryApparatus#getPackageLocator public.

--
MOS_MIGRATED_REVID=93717032
diff --git a/src/test/java/com/google/devtools/build/lib/packages/util/PackageFactoryApparatus.java b/src/test/java/com/google/devtools/build/lib/packages/util/PackageFactoryApparatus.java
index 5370cea..bc641dd 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/util/PackageFactoryApparatus.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/util/PackageFactoryApparatus.java
@@ -74,7 +74,7 @@
     return factory;
   }
 
-  CachingPackageLocator getPackageLocator() {
+  public CachingPackageLocator getPackageLocator() {
     return locator;
   }