Disable the setuptools user warning "Setuptools is replacing distutils."

Once we stop relying on distutils, this filter can be removed.

Signed-off-by: Pedro Algarvio <palgarvio@vmware.com>

salt/__init__.py

@@ -69,6 +69,14 @@ def load_module(self, name):
     append=True,
 )
 
+# Filter the setuptools UserWarning until we stop relying on distutils
+warnings.filterwarnings(
+    "ignore",
+    message="Setuptools is replacing distutils.",
+    category=UserWarning,
+    module="_distutils_hack",
+)
+
 
 def __define_global_system_encoding_variable__():
     import sys

setup.py

@@ -4,6 +4,8 @@
 """
 
 # pylint: disable=file-perms,resource-leakage
+import setuptools  # isort:skip
+
 import contextlib
 import distutils.dist
 import glob