Add cts suite tag to all CTS modules

Test: build
Bug: 65303193
Change-Id: I064459de5d4f8e958f41ac238cad35e5f7e99d3a
diff --git a/tests/cts/net/AndroidTest.xml b/tests/cts/net/AndroidTest.xml
index 4a578ea..4190a77 100644
--- a/tests/cts/net/AndroidTest.xml
+++ b/tests/cts/net/AndroidTest.xml
@@ -13,6 +13,7 @@
      limitations under the License.
 -->
 <configuration description="Config for CTS Net test cases">
+    <option name="test-suite-tag" value="cts" />
     <option name="config-descriptor:metadata" key="component" value="networking" />
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true" />