Memory hotplug: how about respect auto_online_blocks value

[robert-hoo]

How about respect "auto_online_blocks"？
Unconditionally online newly-plugged memory blocks may confuse user.

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@@ -9,6 +9,7 @@ ACTION!="add", GOTO="memory_hotplug_end"
PROGRAM="/bin/uname -p", RESULT=="s390*", GOTO="memory_hotplug_end"
PROGRAM="/bin/uname -p", RESULT=="ppc64*", GOTO="memory_hotplug_end"

+ATTRS{auto_online_blocks}=="offline", GOTO="memory_hotplug_end"
ENV{.state}="online"
PROGRAM="/bin/systemd-detect-virt", RESULT=="none", ENV{.state}="online_movable"
ATTR{state}=="offline", ATTR{state}="$env{.state}"