Fix release builds debugging

Add gdbserver all the time, except when the user signs the package.
Even then the user can "Force debugging" by checking the checkbox.

Change-Id: I274243786f3d6d6b88f41e532bebc24213f5e9db
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/android/androidbuildapkstep.cpp

@@ -342,6 +342,16 @@ void AndroidBuildApkStep::setUseGradle(bool b)
     }
 }
 
+bool AndroidBuildApkStep::addDebugger() const
+{
+    return m_addDebugger;
+}
+
+void AndroidBuildApkStep::setAddDebugger(bool debug)
+{
+    m_addDebugger = debug;
+}
+
 bool AndroidBuildApkStep::verboseOutput() const
 {
     return m_verbose;