title: Android design support library for API 28 (P) not working
body: <p>I've configured android-P SDK environment successfully. When I attempt to use the android design support library I face project build errors. Project configurations are:</p>
  
  <p><strong>IDE: 3.2 Canary 17 Target API: 28 Compile API: 28</strong></p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  apply plugin: 'kotlin-android'
  
  apply plugin: 'kotlin-android-extensions'
  
  android {
      compileSdkVersion 28
      defaultConfig {
          applicationId "com.app.navigationpoc"
          minSdkVersion 21
          targetSdkVersion 28
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      implementation fileTree(include: ['*.jar'], dir: 'libs')
      implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
      implementation 'androidx.appcompat:appcompat:1.0.0-alpha3'
      implementation 'androidx.constraintlayout:constraintlayout:1.1.1'
  
      testImplementation 'junit:junit:4.12'
      androidTestImplementation 'androidx.test:runner:1.1.0-alpha3'
      androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha3'
  
      implementation 'com.android.support:design:28.0.0-alpha3'
      implementation 'com.android.support:cardview-v7:28.0.0-alpha3'
  }
  </code></pre>
  
  <p>And build failed error is:</p>
  
  <blockquote>
    <p>Manifest merger failed : Attribute application@appComponentFactory
    value=(androidx.core.app.CoreComponentFactory) from
    [androidx.core:core:1.0.0-alpha3] AndroidManifest.xml:22:18-86    is
    also present at [com.android.support:support-compat:28.0.0-alpha3]
    AndroidManifest.xml:22:18-91
    value=(android.support.v4.app.CoreComponentFactory).  Suggestion: add
    'tools:replace="android:appComponentFactory"' to  element
    at AndroidManifest.xml:6:5-40:19 to override.</p>
  </blockquote>