[FIX] core: avoid astroid imp module deprecation warning

The astroid package where version is lower than  2.5.1 uses imports the `imp`
module that was deprecated in python 3.4 [0].

In Debian buster, astroid version is 2.1.0 and 2.3.3 in Ubuntu Focal.

With this commit, the deprecation warning is filtered out.

Note that pylint 2.5 avoid that deprecated import [1], that's the reason
why the warning was not showing on current runbot Docker image.

[0] https://docs.python.org/3/library/imp.html
[1] https://github.com/PyCQA/pylint/commit/51c646bf70a6e0a86492bfd2ddd1885671d64d67

closes odoo/odoo#67469

X-original-commit: 8127bea147c093aa64ac7d31ebc69e4dcbef6eef
Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

odoo/netsvc.py

@@ -136,6 +136,7 @@ def init_logger():
         'zeep.loader',# zeep using defusedxml.lxml
         'reportlab.lib.rl_safe_eval',# reportlab importing ABC from collections
         'ofxparse',# ofxparse importing ABC from collections
+        'astroid',  # deprecated imp module (fixed in 2.5.1)
     ]:
         warnings.filterwarnings('ignore', category=DeprecationWarning, module=module)