[CTS] Add MATCH_APEX flag to get installed APEX package

Bug: 188168360
Test: cts WifiNetworkSpecifierTest
Change-Id: I33eed5c3827d1699462f764c38fe01a719534bd8
diff --git a/tests/tests/wifi/src/android/net/wifi/cts/WifiBuildCompat.java b/tests/tests/wifi/src/android/net/wifi/cts/WifiBuildCompat.java
index 46e5a78..9c45894 100644
--- a/tests/tests/wifi/src/android/net/wifi/cts/WifiBuildCompat.java
+++ b/tests/tests/wifi/src/android/net/wifi/cts/WifiBuildCompat.java
@@ -56,7 +56,8 @@
         long wifiStackVersion = 0;
         try {
             String wifiPackageName = null;
-            for (ModuleInfo moduleInfo : packageManager.getInstalledModules(0)) {
+            for (ModuleInfo moduleInfo : packageManager
+                    .getInstalledModules(PackageManager.MATCH_APEX)) {
                 if (moduleInfo.getPackageName().endsWith(WIFI_PACKAGE_NAME_SUFFIX)) {
                     wifiPackageName = moduleInfo.getPackageName();
                     break;