Show version information.
http://<host>:8000/proc/usre/ | root://<host>//proc/user/
?mgm.cmd=version
&mgm.option=m
&mgm.format=json
&eos.ruid=0
&eos.rgid=0
version [-f] [-m] : print EOS version number
-f - print the list of supported features
-m - print in monitoring format