v1.18.6-10 version

[input] fix haproxy for graphite format;
[input] fix redis sentinel for graphite format;
[discover] add haproxy discover;
[discover] fix empty content overwrite;
[prepare] disable consul feature when enable comm;
[config] fix toml/json field tag when parse configuration file;
[timechange] fix timechange detect method;
[iptables] fix index out of range error;
[consul] add flock and disable_consul feature;
[procgather] fix cpu metric collect;
[sudo] fix tty error when used in old linux;