Add regex on namespace search POD_CLEANUP_KUBERNETES_NAMESPACES
Possibility to define a regex on namespace search.
ex:
env:
- name: POD_CLEANUP_INTERVAL
value: 1h
- name: POD_CLEANUP_KUBERNETES_NAMESPACES
value: my_namespace_prefix*
Signed-off-by: sebastien.heurtematte sebastien.heurtematte@eclipse-foundation.org