Merge pull request #68034 from timqn22/add-multi-line-to-yaml-representer

python-common: multi-line for yaml

Reviewed-by: Redouane Kachach <rkachach@redhat.com>
Reviewed-by: Shweta Bhosale <Shweta.Bhosale1@ibm.com>

diff --cc src/python-common/ceph/deployment/service_spec.py
Simple merge