Update the list of supported metrics
Update the list of supported metrics

New metrics according to
http://cbonte.github.io/haproxy-dconv/1.8/management.html:
conn_rate [.F..]: number of connections over the last elapsed second
conn_rate_max [.F..]: highest known conn_rate
conn_tot [.F..]: cumulative number of connections
intercepted [.FB.]: cum. number of intercepted requests (monitor, stats)

Intercepted is quite important as it allows to calculate 'clean' metrics
(excluding monitor checks).

unixsurfer/haproxystats,unixsurfer/haproxystats,unixsurfer/haproxystats