Qualify references to WifiNetworkSuggestions

Connectivity's metalava invocation does not depend on framework-wifi,
so these references fail to resolve, and as a result metalava currently
removes the import.

Fully qualify the references instead, to avoid both metalava trying
to resolve the dependency, and having to depend on framework-wifi just
for javadoc.

Bug: 186197911
Test: build the sdk (with connectivity module stubs as input)
Change-Id: I7129821b9a0d08d06f8e977a3c17fa5f5f6f9cee
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index 8309869..c21bcfa 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -46,7 +46,6 @@
 import android.net.TetheringManager.StartTetheringCallback;
 import android.net.TetheringManager.TetheringEventCallback;
 import android.net.TetheringManager.TetheringRequest;
-import android.net.wifi.WifiNetworkSuggestion;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Build.VERSION_CODES;
@@ -3479,7 +3478,8 @@
          * {@link NetworkCapabilities#getTransportInfo()}) like {@link android.net.wifi.WifiInfo}
          * contain location sensitive information.
          * <li> OwnerUid (retrieved via {@link NetworkCapabilities#getOwnerUid()} is location
-         * sensitive for wifi suggestor apps (i.e using {@link WifiNetworkSuggestion}).</li>
+         * sensitive for wifi suggestor apps (i.e using
+         * {@link android.net.wifi.WifiNetworkSuggestion WifiNetworkSuggestion}).</li>
          * </p>
          * <p>
          * Note: