Merge pull request #59843 from adk3798/cephadm-oauth2-image-variable-name

mgr/cephadm: update oauth2 proxy image variable name

Reviewed-by: Anthony D'Atri <anthonyeleven@users.noreply.github.com>
Reviewed-by: Guillaume Abrioux <gabrioux@ibm.com>
Reviewed-by: Ken Dreyer <kdreyer@ibm.com>

diff --cc src/pybind/mgr/cephadm/module.py
Simple merge