Set sdk_version on mobule snippet lib am: c1a1245a8a am: 21869df031 am: 5fb5461850 am: 1299454335

Original change: https://android-review.googlesource.com/c/platform/external/mobly-snippet-lib/+/1941373

Change-Id: I19140deaf3af57f0282229063ed81c465ff7868d
diff --git a/Android.bp b/Android.bp
index cc285ea..6119740 100644
--- a/Android.bp
+++ b/Android.bp
@@ -25,4 +25,5 @@
         "third_party/sl4a/src/main/**/*.java",
     ],
     manifest: "third_party/sl4a/src/main/AndroidManifest.xml",
+    sdk_version: "current",
 }