Fix detection of HAProxy Enterprise

[mayrstefan]

General information

With recent versions of HAProxy Enterprise (HAPEE) the socket is no more created in a hapee subdirectory. Also /var/run is often only a link to /run.

This change searches all currently known options and stops after the first socket found.

Bug reports

• Agent OS: RHEL 9.7
• HAProxy Fusion 2.0
• HAProxy Enterprise 3.2
• Detailed steps to reproduce the bug: Just run the agent - haproxy is not detected

Fusion 2.0 generates a default configuration for hapee-lb using

stats socket /var/run/hapee-lb.sock

With /var/run being just a link the file is created as /run/hapee-lb.sock

Proposed changes

• What is the expected behavior? Checkmk should work with the default configuration HAProxy Enterprise uses
• What is the observed behavior? HAPEE configuration needs to be modified to work with Checkmk
• If it's not obvious from the above: In what way does your patch change the current behavior? Extend the search path and stop when socket is found to avoid duplicate section output