remove a couple of assertions in the Countly class unit tests that may fail due to changes in DeviceInfo.getDeviceID method (setDeviceID(null) does not necessarily mean getDeviceID() will return null, it may return OpenUDID if available)
call OpenUDID dynamically so that including the OpenUDID source is not necessary to get the Countly Android SDK to work when an app provides it's own deviceID