PHP debugger switcher breaks on pysed

[choonge]

Whenever I specify PHP_DEBUGGER as either none or blackfire, the container fails to start. The logs are showing:

PHP-Debugger: Blackfire enabled
pysed: error: Too many arguments
Usage: pysed [-h] [-v]
             [[-r] [-f] [-s] [-m] [-l] [-g] [-s] --write]

I've reproduced it on the following tags:

• ubuntu-12.04
• ubuntu-16.04
• centos-7
• debian-9

As discussed on Slack, @guiyomh had an idea to use rename rather than pysed:

• disable: rename .ini .ini.disabled *xdebug.ini
• enable: rename .ini.disabled .ini *xdebug.ini.disabled

To do:

• remove pysed package installation
• rewrite pysed usage to rename
• write tests ( this will obsolete Add testsuite for PHP_DEBUGGER #100 )
• document the option in the README of php-apache-dev, php-nginx-dev and php-dev

Working on this in a fork.

[choonge]

For future reference: we decided along the way, that disabling is not needed and we could simply remove the ini files.

Also, I have absolutely no idea how to add those tests, so that stays in #100 ;)