Use terminal width independent "ps" command

[mneudert]

Description:

The current process list lookup is using a ps invocation that depends on the clients terminal width.

Until #22487 is merged, archiving can run on the same host multiple times with overlapping period, e.g. archive both a day and the matching week.

This PR provides the intermediate step of fixing the invocation until we can remove it, to lower the chance of having overlapping periods being archived on the same host.

See also #22515.
Refs L3-798

Review

• Functional review done
• Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• Security review done
• Wording review done
• Code review done
• Tests were added if useful/possible
• Reviewed for breaking changes
• Developer changelog updated if needed
• Documentation added if needed
• Existing documentation updated if needed

[sgiehl]

@mneudert Is this fix something we should include in final Matomo 5.2.0 release?

[michalkleiner]

I think a fix like this is ok to be merged between rc1 and stable 5.2.0 without an additional rc2, the change is quite safe in my view.

From the ps manual:

w      Wide output.  Use this option twice for unlimited width.

[sgiehl]

@mneudert @michalkleiner FYI: I've also applied the fix on next_release branch, so it will be included in 5.2.0