android: New release after making local identity configurable

This also includes a fix for Android 10 and some older fixes for
API level 28 compatibility and a crash on Huawei devices.  The API
used to detect network changes is also replaced on newer Android
versions and an issue with DELETES received during break-before-make
reauthentication is also fixed.

src/frontends/android/app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "org.strongswan.android"
         minSdkVersion 15
         targetSdkVersion 28
-        versionCode 64
+        versionCode 68
-        versionName "2.1.1"
+        versionName "2.2.0"
     }
 
     sourceSets.main {