Slightly edit the build script - copy apk; check package files in test.sh

.buildbot/android/build.sh

@@ -1,8 +1,9 @@
-#!/bin/sh
+#!/bin/bash
 export LC_ALL=en_US.UTF-8
 export LANG=en_US.UTF-8
-cd packages/android
+pushd packages/android
 buildozer android debug || exit $?
-cd ../..
+popd
+
 mkdir -p ../out
-mv packages/android/bin/*.apk ../out
+cp packages/android/bin/*.apk ../out

.buildbot/android/test.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+unzip -p packages/android/bin/*.apk assets/private.tar \
+    | tar --list -z > package.list
+cat package.list
+cat package.list | grep '\.sql$' || exit 1