[FIX] pylint_odoo: Check if the package start with dot to skip

[JesusZapata]

Check if the package start with dot to skip because this package is absolute import

This change now detect when the import start with dot for example

from .no_exists import package

If the import start with dot that import is not detect as external dependency

Related with Vauxoo#134

Fix #170

[JesusZapata]

@moylop260
Your opinion is welcome

[JesusZapata]

@rousseldenis
This change fix your issue related with missing external dependency
Do you check if this change fix your problem?

[rousseldenis]

Tested