test: Use fingerprint verify command

Now that the fingerprint verify command is available, replaces dump +
compare commands with verify command. Also, removes
`detect_fingerprint_change()` since it is only used by
`test_guest_cpu_config_change()`.

Signed-off-by: Takahiro Itazuri <itazur@amazon.com>

tests/integration_tests/functional/test_cpu_template_helper.py

@@ -66,6 +66,16 @@ def fingerprint_compare(
             cmd += f" --filters {' '.join(filters)}"
         utils.run_cmd(cmd)
 
+    def fingerprint_verify(self, baseline_path, output_path, filters):
+        """Verify the given baseline fingerprint."""
+        cmd = (
+            f"{self.binary} fingerprint verify"
+            f" --baseline {baseline_path} --output {output_path}"
+        )
+        if filters:
+            cmd += f" --filters {' '.join(filters)}"
+        utils.run_cmd(cmd)
+
 
 @pytest.fixture(scope="session", name="cpu_template_helper")
 def cpu_template_helper_fixture():
@@ -320,12 +330,15 @@ def test_cpu_config_dump_vs_actual(
         ), f"Mismatched MSR for {key:#010x}: {actual=:#066b} vs. {dump=:#066b}"
 
 
-def detect_fingerprint_change(
-    results_dir, cpu_template_helper, filters=None
-):
+@pytest.mark.no_block_pr
+@pytest.mark.skipif(
+    global_props.host_linux_version not in SUPPORTED_HOST_KERNELS,
+    reason=f"Supported kernels are {SUPPORTED_HOST_KERNELS}",
+)
+def test_guest_cpu_config_change(results_dir, cpu_template_helper):
     """
-    Compare fingerprint files with filters between one taken at the moment and
-    a baseline file taken in a specific point in time.
+    Verify that the guest CPU config has not changed since the baseline
+    fingerprint was gathered.
     """
     fname = f"fingerprint_{global_props.cpu_codename}_{global_props.host_linux_version}host.json"
 
@@ -336,27 +349,10 @@ def detect_fingerprint_change(
     # Baseline fingerprint.
     baseline_path = TEST_RESOURCES_DIR / fname
 
-    # Compare with baseline
-    cpu_template_helper.fingerprint_compare(
+    # Verify the baseline fingerprint.
+    cpu_template_helper.fingerprint_verify(
         baseline_path,
         fingerprint_path,
-        filters,
-    )
-
-
-@pytest.mark.no_block_pr
-@pytest.mark.skipif(
-    global_props.host_linux_version not in SUPPORTED_HOST_KERNELS,
-    reason=f"Supported kernels are {SUPPORTED_HOST_KERNELS}",
-)
-def test_guest_cpu_config_change(results_dir, cpu_template_helper):
-    """
-    Verify that the guest CPU config has not changed since the baseline
-    fingerprint was gathered.
-    """
-    detect_fingerprint_change(
-        results_dir,
-        cpu_template_helper,
         ["guest_cpu_config"],
     )