Fix SDK version for mts-permission to run on R.

Package parser requires APKs to be installed on released platforms to
have numeric minimum and target SDK versions.

- Most test and test apps can be modified to just set mininum and
target SDK version to 10000 (CUR_DEVELOPMENT).
- Setting target SDK version in AndroidManifest.xml <uses-sdk> works,
but setting minimum SDK version there doesn't. So set both in
Android.bp instead.
- Make SystemUtil.runShellCommandOrThrow() backwards compatible on R.

Bug: 152055112
Bug: 181197796
Fixes: 182960931
Test: mts-tradefed run mts-permission
Change-Id: I36cc739133aa33d04d69f46c0070f0289dea696f
diff --git a/Android.bp b/Android.bp
index 1401117..0d50878 100644
--- a/Android.bp
+++ b/Android.bp
@@ -108,3 +108,8 @@
         },
     },
 }
+
+java_defaults {
+    name: "mts-target-sdk-version-current",
+    target_sdk_version: "10000",
+}