KeyMint VTS: check INCLUDE_UNIQUE_ID works

Bug: 202487002
Test: atest VtsAidlKeyMintTargetTest (on CF, O6)
Change-Id: I8bc674b47549aa1133f816c510289774db752e04
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index 37acfa9..12ce859 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -1307,7 +1307,8 @@
                                AuthorizationSet expected_sw_enforced,  //
                                AuthorizationSet expected_hw_enforced,  //
                                SecurityLevel security_level,
-                               const vector<uint8_t>& attestation_cert) {
+                               const vector<uint8_t>& attestation_cert,
+                               vector<uint8_t>* unique_id) {
     X509_Ptr cert(parse_cert_blob(attestation_cert));
     EXPECT_TRUE(!!cert.get());
     if (!cert.get()) return false;
@@ -1472,6 +1473,10 @@
     expected_hw_enforced.Sort();
     EXPECT_EQ(filtered_tags(expected_hw_enforced), filtered_tags(att_hw_enforced));
 
+    if (unique_id != nullptr) {
+        *unique_id = att_unique_id;
+    }
+
     return true;
 }