title: Crashlytics Mapping files not getting generated
body: <p>I have enabled proguard using <code>minifyEnabled true</code> and trying to create build from jenkins. But while creating apk from jenkins I am getting following build error.</p>
  <pre><code>&gt; Task :app:packageUat
  &gt; Task :app:uploadCrashlyticsMappingFileUat FAILED
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':app:uploadCrashlyticsMappingFileUat'.
  &gt; Crashlytics could not find the resource file generated by Google Services. You may need to execute the :process&lt;Variant&gt;GoogleServices Task. Please check your Firebase project configuration (https://firebase.google.com/docs/android/setup). 
  </code></pre>
  <p>I am using FCM and Crashlytics Google services in my application. I have not included <code>google-service.json</code> but initializing runtime. Here is firebase initialization code :</p>
  <pre><code>FirebaseApp.initializeApp(mAppContext, new FirebaseOptions.Builder()
              .setProjectId(BuildConfig.PROJECT_ID)
              .setApiKey(BuildConfig.API_KEY)
              .setApplicationId(BuildConfig.FCM_APPLICATION_ID)
              .setGcmSenderId(BuildConfig.GCM_SENDER_ID)
              .build());
  
      FirebaseCrashlytics.getInstance().setCrashlyticsCollectionEnabled(true);
  </code></pre>
  <p>Following command I am using on jenkins to create build :</p>
  <pre><code>clean
  assemble${Build}
  </code></pre>
  <p>Here is my uat build configuration  :</p>
  <pre><code>uat {
          minifyEnabled true
          shrinkResources true
          signingConfig signingConfigs.uat
          proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
          buildConfigField &quot;String&quot;, 'API_KEY', API_KEY
          buildConfigField &quot;String&quot;, 'FCM_APPLICATION_ID', FCM_APPLICATION_ID
          buildConfigField &quot;String&quot;, 'PROJECT_ID', PROJECT_ID
          buildConfigField &quot;String&quot;, 'GCM_SENDER_ID', GCM_SENDER_ID
  
      }
  </code></pre>
  <p>I can not include google-service.json in my project because of security issue. Is there anything I am missing?</p>