Add experimental_ios_test to the list of rules that objc_xcodeproj can depend on.

--
MOS_MIGRATED_REVID=102763340
diff --git a/src/main/java/com/google/devtools/build/lib/rules/objc/ObjcXcodeprojRule.java b/src/main/java/com/google/devtools/build/lib/rules/objc/ObjcXcodeprojRule.java
index fda1e68..0363956 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/objc/ObjcXcodeprojRule.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/objc/ObjcXcodeprojRule.java
@@ -52,6 +52,7 @@
                 "ios_extension",
                 "ios_framework",
                 "ios_framework_binary",
+                "experimental_ios_test",
                 "ios_test",
                 "objc_bundle_library",
                 "objc_import",