WifiCertManagerTest: disable failing test

Due to KeyStore changes, test is now failing due to an improper
design/impl.  Disable the test and need to determine if the code can
actually be completely removed.

Bug: 69555027
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: Iefb738a42bd39abdefb72332398e2b9ed86c4dd0
diff --git a/tests/wifitests/src/com/android/server/wifi/WifiCertManagerTest.java b/tests/wifitests/src/com/android/server/wifi/WifiCertManagerTest.java
index 04c2802..b123d80 100644
--- a/tests/wifitests/src/com/android/server/wifi/WifiCertManagerTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/WifiCertManagerTest.java
@@ -97,7 +97,7 @@
         }
     }
 
-    @Test
+    // TODO: b/69555027 - determine if test can be removed.  for now, disable failing test
     public void testEmptyConfigFile() {
         WifiCertManager certManager = new WifiCertManager(mContext, mConfigFile);
         final String[] expected =