Bring in line with other exporters: rename binary, add initscripts, create system user, install documentation and manpage. Closes: #909175, #909174.

* New usptream snapshot, fixes build issues. Closes: #911436.
* Add +ds suffix to mark repackaging.

Update to new client_golang

Signed-off-by: beorn7 <beorn@soundcloud.com>

Signed-off-by: beorn7 <beorn@soundcloud.com>

Also, fix NewProcessCollectorPidFn -> NewProcessCollector, which is
required by the update.

Signed-off-by: beorn7 <beorn@soundcloud.com>

Signed-off-by: Vladimir Dimitrov <dimitrov.vlado@gmail.com>

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* Use Makefile.common from Prometheus

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* travis: check for missing license header

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* Sync Makefile.common from prometheus

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

Change as per #117
Signed-off-by: Daniel Foster <merlin83b@users.noreply.github.com>

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

Signed-off-by: William Dauchy <w.dauchy@criteo.com>

* Added SSL verify option

* Updated the documentation

Fix wrong values in HTTP request duration metrics

convert collected metrics from milliseconds to seconds

closes #83
closes #84

Signed-off-by: Ben Kochie <bjk@gitlab.com>
Signed-off-by: William Dauchy <w.dauchy@criteo.com>

support conn_tot stats

haproxy 1.7 introduces a distinction between connection and sessions,
sessions represents an end to end connection:
"with the introduction of SSL, proxy protocol and layer4 ACLs it was
needed to cut the end-to-end sessions in smaller parts, hence the
introduction of 'connections'"

this patch renames the old `connections_total` to `sessions_total` in order
to use the same vocabulary as haproxy; I was puzzled to keep the compatibility
but in the long term I think this will introduces more incomprehension
than it resolves.
so this is a breaking change.

`connections_total` now represents the new metric from haproxy.

also add comment to the new available metrics.

Signed-off-by: William Dauchy <w.dauchy@criteo.com>

Signed-off-by: Tobias Schmidt <tobidt@gmail.com>

* Added stats about response time from HAProxy v1.5.10

* Refactor tests to add new fields of response time; Change version of HAProxy stats.

* Change new metrics names to add average and units.

Signed-off-by: Vitor Arins <vitorarins@gmail.com>

* Refactor minimum csv field count; Check if the field index is valid.

Signed-off-by: Vitor Arins <vitorarins@gmail.com>

* Correct value for minimum csv field count.

Signed-off-by: Vitor Arins <vitorarins@gmail.com>

* Add test for older Haproxy versions.

Signed-off-by: Vitor Arins <vitorarins@gmail.com>

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