tests: Suppress pip version warnings

.ci/debops_common_install.py

@@ -7,7 +7,7 @@ ci_lib.DISTROS = ['debian']
 
 ci_lib.run_batches([
     [
-        'pip install -qqq "debops[ansible]==2.1.2"',
+        'python -m pip --no-python-version-warning --disable-pip-version-check "debops[ansible]==2.1.2"',
     ],
     [
         'aws ecr-public get-login-password | docker login --username AWS --password-stdin public.ecr.aws',

tox.ini

@@ -67,7 +67,7 @@ deps =
     ansible4: ansible==4.8.0
     ansible5: ansible==5.0.1
 install_command =
-    python -m pip --no-python-version-warning install {opts} {packages}
+    python -m pip --no-python-version-warning --disable-pip-version-check install {opts} {packages}
 commands_pre =
     mode_ansible: {toxinidir}/.ci/ansible_install.py
     mode_debops_common: {toxinidir}/.ci/debops_common_install.py