Update haproxy-sessions-by-servers

Updated haproxy-sessions-by-servers to look at the current sessions by individual servers.  I believe this was the original intent of the script (it was broken by default when symlinking it in /etc/munin/plugins/ (/etc/munin/plugins/haproxy-sessions-by-servers).

NOW SUPPORTS:
- URL + Socket Stats
- Dynamic list of individual backend member servers
- tested / works with munin-node

NUANCES:
- may be annoying with an absurd number of backend member nodes (I have 10 on this particular haproxy instance)
Update haproxy-sessions-by-servers

- Minor update to oversight for creating a filtered list for url parsing as opposed to socket parsing.
Update haproxy-sessions-by-servers

Fixed issue with number formatting.  Graph_printf doesn't seem to be working... so graphs aren't updating.
Add open_files capability to ejabberd_resources_

It appears that erlang port is not bound to an OS file very often.
Thus "ulimit -n" is moved to a separate graph and lsof/fstat is used as
a backend to count the number of files open.
dartybox: initial add
dartybox: adding multigraph nice behavior
dartybox: fix the dirtyconfig behavior
dartybox: using DERIVE for packets counts
dartybox: fix the date & labels
p: adding a cpu freq 1 sec for RPi
p: adding a temp plugin for RPi
p/rpi_temp: adding a milli precision
p/cpu_freq_1sec: fix the unit & the DS type
p/cpu_freq_1sec: fix the indentation
p/dartybox: adding a license
Merge pull request #409 from steveschnepp/dartybox

Some plugins specific to Dartybox
p/cpu_freq_1sec: adding a description
Merge pull request #408 from steveschnepp/rpi

Some plugins specific to RPi
Fix cpct value
Update haproxy-sessions-by-servers