Disambiguate fs-verity and apk-verity

Standard fs-verity does not allow skipping part of the file.  Let's call
the original version for APK "apk-verity" for now.

Test: atest PtsApkVerityTestCases
Bug: 112037636
Change-Id: I11264d5959b034fe373802c53d08f329fa926e58
diff --git a/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java b/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java
index 939522d..1471870 100644
--- a/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java
+++ b/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java
@@ -534,7 +534,7 @@
                    NoSuchAlgorithmException {
         try (RandomAccessFile apk = new RandomAccessFile(apkPath, "r")) {
             SignatureInfo signatureInfo = findSignature(apk);
-            return ApkVerityBuilder.generateApkVerity(apkPath, bufferFactory, signatureInfo);
+            return VerityBuilder.generateApkVerity(apkPath, bufferFactory, signatureInfo);
         }
     }
 
@@ -547,7 +547,7 @@
             if (vSigner.verityRootHash == null) {
                 return null;
             }
-            return ApkVerityBuilder.generateApkVerityRootHash(
+            return VerityBuilder.generateApkVerityRootHash(
                     apk, ByteBuffer.wrap(vSigner.verityRootHash), signatureInfo);
         }
     }