Issue#8 Take use of TestFixtures to keep MockWebServer TLS setup in the network module, while still being able to use it in Android Tests

gradlescripts/testoptions.gradle

@@ -72,6 +72,7 @@ task jvmTests(dependsOn: ["app:testDebugUnitTest", "core:test", "network:test"])
 task robolectricTests(type: Exec) {
     group = 'Tests'
     description = 'Run all Robolectric tests based on the Instrumented naming convention'
+    // todo is there a better way?
     commandLine 'sh', './gradlew', 'testDebugUnitTest', '--tests', 'org.fnives.test.*InstrumentedTest'
 }