Add VSR annotation to APF multi-device tests

Annotate APFv4 and APFv6 multi-device tests with `@VsrTest`.
This marks these tests for compliance with specific VSR requirements,

Flag: EXEMPT test only
Test: atest CtsConnectivityMultiDevicesTestCases:ApfV4Test
Test: atest CtsConnectivityMultiDevicesTestCases:ApfV6Test
Test: ./cts-tradefed run cts \
      -m CtsConnectivityMultiDevicesTestCases \
      -t ApfV4Test --shard-count 2
Test: ./cts-tradefed run cts \
      -m CtsConnectivityMultiDevicesTestCases \
      -t ApfV6Test --shard-count 2
Change-Id: I864aa65f6f4d584c4f8077f98aac0b0da8e501c8

tests/cts/multidevices/Android.bp

@@ -31,6 +31,7 @@ python_test_host {
         "mobly",
         "scapy",
         "net-tests-utils-host-python-common",
+        "platform-test-py-annotations",
     ],
     test_suites: [
         "cts",

tests/cts/multidevices/apfv4_test.py

@@ -14,6 +14,7 @@
 
 import time
 from absl.testing import parameterized
+from android.platform.test.annotations import VsrTest
 from mobly import asserts
 from net_tests_utils.host.python import apf_test_base, apf_utils
 from scapy.layers.l2 import Ether
@@ -24,6 +25,7 @@ ETHER_BROADCAST_ADDR = 'FFFFFFFFFFFF'
 MIN_PACKET_SIZE = 60
 
 
+@VsrTest(requirements=['VSR-5.3.12-002', 'VSR-5.3.12-005'])
 class ApfV4Test(apf_test_base.ApfTestBase, parameterized.TestCase):
 
   def setup_class(self):

tests/cts/multidevices/apfv6_test.py

@@ -13,6 +13,7 @@
 #  limitations under the License.
 
 import time
+from android.platform.test.annotations import VsrTest
 from mobly import asserts
 from net_tests_utils.host.python import adb_utils, apf_test_base, apf_utils, assert_utils
 from scapy.contrib.igmpv3 import IGMPv3, IGMPv3gr, IGMPv3mq, IGMPv3mr
@@ -37,6 +38,18 @@ APFV6_VERSION = 6000
 ARP_OFFLOAD_REPLY_LEN = 60
 
 
+@VsrTest(
+    requirements=[
+        'VSR-5.3.12-002',
+        'VSR-5.3.12-005',
+        'VSR-5.3.12-012',
+        'VSR-5.3.12-013',
+        'VSR-5.3.12-014',
+        'VSR-5.3.12-015',
+        'VSR-5.3.12-016',
+        'VSR-5.3.12-017',
+    ]
+)
 class ApfV6Test(apf_test_base.ApfTestBase):
 
   def setup_class(self):