Merge "use apex_test for test apexes"

apex/sdkextensions/testing/Android.bp

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-apex {
+apex_test {
     name: "test_com.android.sdkext",
     visibility: [ "//system/apex/tests" ],
     defaults: ["com.android.sdkext-defaults"],