Address warning messages in running prod6 sims.

[GernotMaier]

Command: simtools-simulate-prod --config tests/integration_tests/config/simulate_prod_gamma_20_deg.yml

This is possibly related to incomplete or wrong prod6 parameters.

The following warnings are given by sim_telarray:

Warning: trigger window does not cover full readout window.
(F)ADC data is simulated for a readout window of up to 73.2 ns,
trigger conditions in a 73.2 ns window starting 2.9 ns before (F)ADC data.

Warnings from corsika:

...
sh: line 1: ps: command not found
...
 Warning: CORSIKA producing only photons in the range 240 to 700 nm
 but telescope 1 has sensitivity from 260 to 769 nm.
 Extending the range to 240 to 769 nm would imply 1.0228 times bigger bunches.
 No such correction is implemented (but could be done unless CEFFIC or CERWLEN are used).
 The impact on the signal though is expected to be negligible. No problem
...

[orelgueta]

From a quick check,

• The sim_telarray warning exists also in official Prod6 simulations. It should be harmless, triggering in the last ~3 ns of the readout window is highly unlikely. No harm in fixing it, but it can be low priority.
• The CORSIKA warning should be fixed by changing the CORSIKA cherenkov photon wavelength range in corsika_cherenkov_photon_wavelength_range.json to go up to 1000 nm like we simulate in Prod6.

[orelgueta]

Oh and the ps error should also be considered. Can be solved by installing procps in the docker image. I suggest we do it because it provides valuable information in the log file (or we come up with a different approach for the same functionality).