I added 2 packages to ovirt-imageio packages files:
https://gerrit.ovirt.org/#/c/85639/

The next patch using these packages
https://gerrit.ovirt.org/#/c/85245/

fail to import the package on some slaves:

00:02:34.093 ==================================== ERRORS ====================================
00:02:34.093 ____________________ ERROR collecting test/qemuimg_test.py _____________________
00:02:34.093 ImportError while importing test module '/home/jenkins/workspace/ovirt-imageio_master_check-patch-el7-x86_64/ovirt-imageio/common/test/qemuimg_test.py'.
00:02:34.094 Hint: make sure your test modules/packages have valid Python names.
00:02:34.094 Traceback:
00:02:34.094 test/qemuimg_test.py:16: in <module>
00:02:34.094     from ovirt_imageio_common import qemuimg
00:02:34.094 ovirt_imageio_common/qemuimg.py:11: in <module>
00:02:34.094     from . compat import subprocess
00:02:34.095 ovirt_imageio_common/compat.py:12: in <module>
00:02:34.095     import subprocess32 as subprocess  # NOQA: F401 (unused import)
00:02:34.095 E   ImportError: No module named subprocess32
00:02:34.095 !!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!
00:02:34.096 =========================== 1 error in 1.06 seconds ============================

Do we have a way to invalidate mock cache manually?

Nir