Module configuration cache file is not removed on development mode change

[vvaswani]

When enabling/disabling development mode, the module cache file is not removed. On investigation, it seems this is because the application configuration returned by getApplicationConfig() in ConfigDiscoveryTrait is an empty array, which in turn is because the application configuration file is not being read in correctly.

Other functionality (addition/removal of development.*.dist files) is fine.

[weierophinney]

This repository has been closed and moved to laminas/laminas-development-mode; a new issue has been opened at laminas/laminas-development-mode#5.