Content of META-INF/services has to be retained in a build result

[drogatkin]

https://github.com/miracle2k/android-platform_sdk/blob/a43666cc4f8d3e9eaf0ef7bdb24696c02c2622b5/sdkmanager/libs/sdklib/src/com/android/sdklib/build/ApkBuilder.java#L737 It looks like META-INF and below directories are not included in the produced results, however META-INF/services may include for app functionality content. META-INF has to be excluded from the check, or at least services sub-directory. It isn't clear how it can be done without changing the code.