Change --shards option to --shard-count

Change-Id: Idd5352efefc6b8619ca3c26e9ae3fc34de585470
diff --git a/automated/android/multinode/tradefed/tradefed-multinode.yaml b/automated/android/multinode/tradefed/tradefed-multinode.yaml
index ab327f1..ae2db8f 100644
--- a/automated/android/multinode/tradefed/tradefed-multinode.yaml
+++ b/automated/android/multinode/tradefed/tradefed-multinode.yaml
@@ -22,7 +22,7 @@
     TEST_URL: "http://testdata.validation.linaro.org/cts/android-cts-7.1_r1.zip"
     TEST_PARAMS: "run cts -m CtsBionicTestCases --abi arm64-v8a --disable-reboot --skip-preconditions --skip-device-info"
     TEST_RETRY_PARAMS: ""
-    # Determine the number of shards automatically and add the `--shards N`
+    # Determine the number of shards automatically and add the `--shard-count N`
     # parameter to the CTS invocation.
     TEST_PARAMS_AUTO_SHARDS: "true"
     MAX_RETRIES: "10"
@@ -67,9 +67,9 @@
                 numShards="$(lava-role list | grep -v '^$' | wc -l)"
                 info_msg "Determined number of shards based on MultiNode role counts: ${numShards}"
                 if [ "${numShards}" -ne 1 ]; then
-                    TEST_PARAMS="${TEST_PARAMS} --shards ${numShards}"
+                    TEST_PARAMS="${TEST_PARAMS} --shard-count ${numShards}"
                     if [ -n "${TEST_RETRY_PARAMS}" ]; then
-                        TEST_RETRY_PARAMS="${TEST_RETRY_PARAMS} --shards ${numShards}"
+                        TEST_RETRY_PARAMS="${TEST_RETRY_PARAMS} --shard-count ${numShards}"
                     fi
                 fi
             fi