Add a workaround for work manager pom files

To work around the bug gradle/gradle#3170
add explicit mention of dependency type @aar for android library dependencies.
This will mean that now pom files will now have correct <type>aar</type>

Comparison of old vs new:
https://paste.googleplex.com/6020163941957632

Test: ./gradlew createArchive and verify pom file dependencies now have type tag
Change-Id: Ia30454a4fba985865ea9b64622e3ba4c3ff67a3d

buildSrc/src/main/kotlin/androidx/build/dependencies/Dependencies.kt

@@ -28,7 +28,7 @@ const val DEXMAKER_MOCKITO = "com.linkedin.dexmaker:dexmaker-mockito:2.19.0"
 const val ESPRESSO_CONTRIB = "androidx.test.espresso:espresso-contrib:3.1.0-alpha3"
 const val ESPRESSO_CORE = "androidx.test.espresso:espresso-core:3.1.0-alpha3"
 const val FINDBUGS = "com.google.code.findbugs:jsr305:2.0.1"
-const val FIREBASE_JOBDISPATCHER = "com.firebase:firebase-jobdispatcher:0.8.5"
+const val FIREBASE_JOBDISPATCHER = "com.firebase:firebase-jobdispatcher:0.8.5@aar"
 const val GOOGLE_COMPILE_TESTING = "com.google.testing.compile:compile-testing:0.11"
 const val GSON = "com.google.code.gson:gson:2.8.0"
 const val GUAVA = "com.google.guava:guava:23.5-jre"
@@ -42,7 +42,7 @@ const val KOTLIN_METADATA = "me.eugeniomarletti.kotlin.metadata:kotlin-metadata:
 const val MOCKITO_CORE = "org.mockito:mockito-core:2.19.0"
 const val MULTIDEX = "androidx.multidex:multidex:2.0.0"
 const val NULLAWAY = "com.uber.nullaway:nullaway:0.3.7"
-const val PLAY_SERVICES = "com.google.android.gms:play-services-base:11.6.0"
+const val PLAY_SERVICES = "com.google.android.gms:play-services-base:11.6.0@aar"
 const val REACTIVE_STREAMS = "org.reactivestreams:reactive-streams:1.0.0"
 const val RX_JAVA = "io.reactivex.rxjava2:rxjava:2.0.6"
 const val TEST_RUNNER = "androidx.test:runner:1.1.0-alpha3"

work/workmanager-firebase/build.gradle

@@ -44,15 +44,16 @@ android {
 }
 
 dependencies {
-
+    // @aar and { transitive = true } are needed as a workaround for
+    // https://github.com/gradle/gradle/issues/3170
     implementation(project(":work:work-runtime"))
-    implementation(PLAY_SERVICES, libs.support_exclude_config)
-    implementation(FIREBASE_JOBDISPATCHER, libs.support_exclude_config)
+    implementation(PLAY_SERVICES) { transitive = true }
+    implementation(FIREBASE_JOBDISPATCHER) { transitive = true }
     // Temporary workaround to the fact that FIREBASE_JOBDISPATCHER imports v4 of 25.0.0, but we
     // pull in 26.1.0 on some of the dependencies of v4, but not support-media-compat.
-    implementation("com.android.support:support-v4:26.1.0", libs.support_exclude_config)
-    implementation "android.arch.persistence.room:runtime:1.0.0"
-    annotationProcessor "android.arch.persistence.room:compiler:1.0.0"
+    implementation("com.android.support:support-v4:26.1.0@aar") { transitive = true }
+    implementation("android.arch.persistence.room:runtime:1.0.0@aar") { transitive = true }
+    annotationProcessor("android.arch.persistence.room:compiler:1.0.0")
 
     androidTestImplementation(project(":work:work-runtime"))
     androidTestImplementation(TEST_RUNNER)

work/workmanager-test/build.gradle

@@ -26,9 +26,11 @@ plugins {
 }
 
 dependencies {
-    implementation project(':work:work-runtime')
-    implementation "android.arch.lifecycle:livedata-core:1.1.0"
-    implementation "android.arch.persistence.room:runtime:1.0.0"
+    // @aar and { transitive = true } are needed as a workaround for
+    // https://github.com/gradle/gradle/issues/3170
+    implementation(project(':work:work-runtime'))
+    implementation("android.arch.lifecycle:livedata-core:1.1.0@aar") { transitive = true }
+    implementation("android.arch.persistence.room:runtime:1.0.0@aar") { transitive = true }
     annotationProcessor "android.arch.persistence.room:compiler:1.0.0"
 
     androidTestImplementation "android.arch.core:core-testing:1.1.0"

work/workmanager/build.gradle

@@ -42,11 +42,13 @@ android {
 }
 
 dependencies {
-    api "android.arch.lifecycle:extensions:1.1.0"
-    implementation "android.arch.persistence.room:runtime:1.1.1-rc1"
-    annotationProcessor "android.arch.persistence.room:compiler:1.1.1-rc1"
-    androidTestImplementation "android.arch.core:core-testing:1.1.0"
-    androidTestImplementation "android.arch.persistence.room:testing:1.1.1-rc1"
+    // @aar and { transitive = true } are needed as a workaround for
+    // https://github.com/gradle/gradle/issues/3170
+    api("android.arch.lifecycle:extensions:1.1.0@aar") { transitive = true }
+    implementation("android.arch.persistence.room:runtime:1.1.1-rc1@aar") { transitive = true }
+    annotationProcessor("android.arch.persistence.room:compiler:1.1.1-rc1")
+    androidTestImplementation("android.arch.core:core-testing:1.1.0")
+    androidTestImplementation("android.arch.persistence.room:testing:1.1.1-rc1")
     androidTestImplementation(TEST_RUNNER)
     androidTestImplementation(ESPRESSO_CORE)
     androidTestImplementation(MOCKITO_CORE, libs.exclude_bytebuddy) // DexMaker has its own MockMaker