Add coverage flag

.travis.yml

@@ -28,7 +28,7 @@ before_install:
 
 script:
   - ./gradlew :app:lintGoogleplayRelease
-  - ./gradlew :app:createGoogleplayDebugAndroidTestCoverageReport
+  - ./gradlew -Pcoverage :app:createGoogleplayDebugAndroidTestCoverageReport
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)

app/build.gradle

@@ -49,7 +49,7 @@ android {
             applicationIdSuffix ".debug"
             resValue 'string', 'mapbox_key', project.hasProperty('tasks_mapbox_key_debug') ? tasks_mapbox_key_debug : ''
             resValue 'string', 'google_key', project.hasProperty('tasks_google_key_debug') ? tasks_google_key_debug : ''
-            testCoverageEnabled true
+            testCoverageEnabled project.hasProperty('coverage')
         }
         release {
             resValue 'string', 'mapbox_key', project.hasProperty('tasks_mapbox_key') ? tasks_mapbox_key : ''