During the run of external upgrade playbook, we connect to systems
with different OS releases via delegate_to, which seems to confuse the
autodetection of Python interpreter. Set it explicitly to
platform-python which should work both on EL7 and EL8.
Co-Authored-By: Sergii Golovatiuk <sgolovat@redhat.com>
Change-Id: Ieb486f0c3e4de7229cdd2be49d4d0f038668f06d
Closes-Bug: #1830713
(cherry picked from commit 770b578bfbb151a91184f1e6f403e952def0c30e)