Get rid of manually created IKeystoreService.

Java/aidl side changes necessary to generate IKeystoreService.cpp
Generated C++ service currently doesn't support null parameters, so lots
of parameters were updated to pass default value instead of null.

Test: cts-tradefed run cts -m CtsKeystoreTestCases
Bug: 68389643

Change-Id: Ifaf2ab48b2bcd7b081e4b336aa279fa8ba4fbbbf

core/java/Android.bp

@@ -2,3 +2,8 @@ filegroup {
     name: "IKeyAttestationApplicationIdProvider.aidl",
     srcs: ["android/security/keymaster/IKeyAttestationApplicationIdProvider.aidl"],
 }
+
+filegroup {
+    name: "IKeystoreService.aidl",
+    srcs: ["android/security/IKeystoreService.aidl"],
+}