[InformationElementUtil] Add FT/SAE AKM

Add FT/SAE AKM to InformationElementUtil class and parse it correctly so
that the phone would be able to associate with APs advertising it.
Added additional unit tests that were missing.

Bug: 132378498
Test: atest InformationElementUtilTest
Change-Id: I470e4e071de36dfe8f79475477c6077ed8bef3cb

wifi/java/android/net/wifi/ScanResult.java

@@ -153,6 +153,11 @@ public class ScanResult implements Parcelable {
      * Security key management scheme: SUITE_B_192.
      */
     public static final int KEY_MGMT_EAP_SUITE_B_192 = 10;
+    /**
+     * @hide
+     * Security key management scheme: FT_SAE.
+     */
+    public static final int KEY_MGMT_FT_SAE = 11;
     /**
      * @hide
      * No cipher suite.