[android] disable leak canary during instrumentation tests

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/InstrumentationApplication.kt

@@ -0,0 +1,10 @@
+package com.mapbox.mapboxsdk
+
+import com.mapbox.mapboxsdk.testapp.MapboxApplication
+
+class InstrumentationApplication : MapboxApplication() {
+  override fun initializeLeakCanary(): Boolean {
+    // do not initialize leak canary during instrumentation tests
+    return true
+  }
+}

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/InstrumentationRunner.kt

@@ -0,0 +1,11 @@
+package com.mapbox.mapboxsdk
+
+import android.app.Application
+import android.content.Context
+import android.support.test.runner.AndroidJUnitRunner
+
+class InstrumentationRunner : AndroidJUnitRunner() {
+  override fun newApplication(cl: ClassLoader?, className: String?, context: Context?): Application {
+    return super.newApplication(cl, InstrumentationApplication::class.java.name, context)
+  }
+}