Enable secondary_user_on_secondary_display for CtsNetApi23TestCases

secondary_user_on_secondary_display is for background users that have
access to UI on assigned displays (a.k.a. visible background users) on
devices that have config_multiuserVisibleBackgroundUsers enabled. The
main use case is Automotive's multi-display Whole Cabin experience where
passengers (modeled as visible background users) can interact with the
display in front of them concurrently with the driver (modeled as the
current user) interacting with driver's display.

Bug: 364635030

Test: atest CtsNetApi23TestCases
Test: atest --user-type secondary_user_on_secondary_display \
        CtsNetApi23TestCases

(cherry picked from https://android-review.googlesource.com/q/commit:7969d8baff85ae6c2165e7ac525c913546f070f0)
Merged-In: I9315eff338e5ba232c26e27d2885ab922abddabd
Change-Id: I9315eff338e5ba232c26e27d2885ab922abddabd
diff --git a/tests/cts/net/api23Test/AndroidTest.xml b/tests/cts/net/api23Test/AndroidTest.xml
index 8042d50..fcc73f3 100644
--- a/tests/cts/net/api23Test/AndroidTest.xml
+++ b/tests/cts/net/api23Test/AndroidTest.xml
@@ -18,6 +18,7 @@
     <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
     <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
     <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user_on_secondary_display" />
     <option name="not-shardable" value="true" />
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true" />