Fix test installation script

[fredg02]

No description provided.

[s-martin]

@fredg02, did you try to address the error from https://github.com/MiczFlor/RPi-Jukebox-RFID/runs/640147466 with this PR?
The path where the test script looks for PhonieboxInstall.conf has changed, but the file is still not created/available.

Of course problem could be Docker related, maybe file already deleted again. Should we try, if the test script works on Docker?

[fredg02]

@fredg02, did you try to address the error from https://github.com/MiczFlor/RPi-Jukebox-RFID/runs/640147466 with this PR?

No, my intention was to adapt the test script after this change:
https://github.com/MiczFlor/RPi-Jukebox-RFID/blob/develop/scripts/installscripts/buster-install-default.sh#L803-L805

The path where the test script looks for PhonieboxInstall.conf has changed, but the file is still not created/available.

Sorry, that was not intended. The test script should look for the conf file in the home dir. PR #929 should fix this.

Of course problem could be Docker related, maybe file already deleted again. Should we try, if the test script works on Docker?

Let's see if PR #929 fixes it.