Enable publishing of Navigation artifacts

Test: ./gradlew createArchive
Change-Id: Ia32194be8a1af6696155f1e3f5c61df2bd65795c
diff --git a/navigation/testing/build.gradle b/navigation/testing/build.gradle
index 96cd802..923da88 100644
--- a/navigation/testing/build.gradle
+++ b/navigation/testing/build.gradle
@@ -36,7 +36,7 @@
 
 supportLibrary {
     name = "Android Navigation Testing"
-    publish = false
+    publish = true
     mavenVersion = LibraryVersions.NAVIGATION
     mavenGroup = LibraryGroups.NAVIGATION
     inceptionYear = "2017"