mgr/cephadm: add enable_haproxy_protocol to ingress and nfs service specs

mgr/cephadm: add enable_haproxy_protocol to ingress and nfs service specs

Add a new boolean field, enable_haproxy_protocol, to both the ingress
service spec and the nfs service spec. The ingress service spec needs
the field to tell haproxy to enable proxy protocol (v2) support.
The nfs service spec needs the field to allow the nfs server to accept
proxy protocol messages.

Signed-off-by: John Mulligan <jmulligan@redhat.com>
(cherry picked from commit 5691def1f8634e4e0a55b313febea1fd0d8cb41a)

Conflicts:
	src/python-common/ceph/deployment/service_spec.py