Add env variable to set default pylint config file
Add env variable to set default pylint config file

Using the "PYLINT_CONFIG_FILE" environment variable,
it's possible to choose which config file will be used
during the regular lint check (i.e. not for Pull Request use case).

acsone/maintainer-quality-tools,ERP-Ukraine/maintainer-quality-tools,acsone/maintainer-quality-tools,dreispt/maintainer-quality-tools,OCA/maintainer-quality-tools,dreispt/maintainer-quality-tools,OCA/maintainer-quality-tools,gurneyalex/maintainer-quality-tools,ilyasProgrammer/maintainer-quality-tools,ERP-Ukraine/maintainer-quality-tools,gurneyalex/maintainer-quality-tools,acsone/maintainer-quality-tools,dreispt/maintainer-quality-tools,ERP-Ukraine/maintainer-quality-tools,ilyasProgrammer/maintainer-quality-tools,gurneyalex/maintainer-quality-tools,OCA/maintainer-quality-tools