chore(devtool): update cmd_test help

Add missing descriptions for additional arguments

Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>

Author: ShadowCurse

tools/devtool

@@ -427,14 +427,22 @@ cmd_help() {
     echo "    sh CMD..."
     echo "        Launch the development container and run a command."
     echo ""
-    echo "    test [-- [<pytest args>]]"
-    echo "        Run the Firecracker integration tests."
+    echo "    test [args] [-- [<pytest args>]]"
+    echo "        Run the Firecracker integration or A/B tests."
     echo "        The Firecracker testing system is based on pytest. All arguments after --"
     echo "        will be passed through to pytest."
+    echo ""
+    echo "        Args for the `test` itself:"
+    echo "        -h, --help                   Print help"
     echo "        -c, --cpuset-cpus cpulist    Set a dedicated cpulist to be used by the tests."
     echo "        -m, --cpuset-mems memlist    Set a dedicated memlist to be used by the tests."
     echo "            --performance            Tweak various setting of the host running the tests (such as C- and P-states)"
     echo "                                     to achieve consistent performance. Used for running performance tests in CI."
+    echo "        --ab                         Run A/B test."
+    echo "        --no-build                   Skip building step."
+    echo "        --no-archive                 Skip archiving of `test_result` after the test is done."
+    echo "        --no-kvm-check               Skip checking for `/dev/kvm` presence."
+    echo "        --no-artifacts-check         Skip checking existing artifacts."
     echo ""
     echo "    build_ci_artifacts [all|rootfs|kernels]"
     echo "        Builds the rootfs and guest kernel artifacts we use for our CI."