Remove the repository name from PACKAGE_NAME and move it to the new REPOSITORY_NAME symbol.

--
MOS_MIGRATED_REVID=105954652
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ASTFileLookupFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/ASTFileLookupFunction.java
index ab2b99e..e5e4771 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/ASTFileLookupFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ASTFileLookupFunction.java
@@ -146,7 +146,8 @@
                         // the two below don't matter for extracting the ValidationEnvironment:
                         /*astFileContentHashCode=*/null,
                         /*importMap=*/null)
-                    .setupDynamic(Runtime.PKG_NAME, Runtime.NONE)));
+                    .setupDynamic(Runtime.PKG_NAME, Runtime.NONE)
+                    .setupDynamic(Runtime.REPOSITORY_NAME, Runtime.NONE)));
         }
       } else {
         ast = BuildFileAST.parseBuildFile(path, fileSize, env.getListener(), false);