Update gradle to 27.0 infrastructure

Test: ./gradlew createArchive
Change-Id: Ibef7130e5b5f419642ee90ebfbc99b951356691f

diff --git a/buildSrc/src/main/java/android/support/LibraryVersions.java b/buildSrc/src/main/java/android/support/LibraryVersions.java
index c994f6e..1a206c1 100644
--- a/buildSrc/src/main/java/android/support/LibraryVersions.java
+++ b/buildSrc/src/main/java/android/support/LibraryVersions.java

@@ -69,4 +69,9 @@
      * Version code for shared testing code of flatfoot
      */
     public static final Version ARCH_CORE_TESTING = FLATFOOT_1_0_BATCH;
+
+    /**
+     * Version code for Navigation
+     */
+    public static final Version NAVIGATION = new Version("0.5.0-alpha1");
 }

diff --git a/navigation/runtime/build.gradle b/navigation/runtime/build.gradle
index 8554111..77e25cf 100644
--- a/navigation/runtime/build.gradle
+++ b/navigation/runtime/build.gradle

@@ -13,8 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-apply plugin: 'com.android.library'
-apply plugin: 'maven'
+
+import android.support.LibraryVersions
+import android.support.SupportLibraryExtension
+
+apply plugin: android.support.FlatfootAndroidLibraryPlugin
 
 android {
     compileSdkVersion tools.current_sdk
@@ -65,7 +68,6 @@
 }
 
 createAndroidCheckstyle(project)
-version = "0.5.0-alpha1"
 
 android.libraryVariants.all { variant ->
     def name = variant.buildType.name
@@ -76,3 +78,12 @@
         destinationDir new File(project.buildDir, "libJar")
     }
 }
+
+version = LibraryVersions.NAVIGATION.toString()
+supportLibrary {
+    name 'Android Navigation Runtime'
+    publish true
+    inceptionYear '2017'
+    description "Android Navigation-Runtime"
+    url SupportLibraryExtension.ARCHITECTURE_URL
+}
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