build: Pin pip version to 21.1.3 in Salt master image#4831

bert-e merged 1 commit intodevelopment/132.0scality/metalk8s:development/132.0from

bugfix/MK8S-198-avoid-not-trace-attributescality/metalk8s:bugfix/MK8S-198-avoid-not-trace-attributeCopy head branch name to clipboard