Bug 2300273

Description of problem:
=============

Cmount_param are missing from export file.  Ref BZ - https://bugzilla.redhat.com/show_bug.cgi?id=2246077#c9

This is required to fix the below memory consumption issue in NFS.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2236325

RHCS 8.0
================

Export file --->

# ceph nfs export info nfsganesha /ganesha2
{
  "access_type": "RW",
  "clients": [],
  "cluster_id": "nfsganesha",
  "export_id": 2,
  "fsal": {
    "fs_name": "cephfs",
    "name": "CEPH",
    "user_id": "nfs.nfsganesha.2"
  },
  "path": "/",
  "protocols": [
    4
  ],
  "pseudo": "/ganesha2",
  "security_label": true,
  "squash": "none",
  "transports": [
    "TCP"
  ]
}


RHCS 7.1
============
Export file

# ceph nfs export info nfsganesha /export_1
{
  "access_type": "RW",
  "clients": [],
  "cluster_id": "nfsganesha",
  "export_id": 1,
  "fsal": {
    "cmount_path": "/",
    "fs_name": "cephfs",
    "name": "CEPH",
    "user_id": "nfs.nfsganesha.cephfs"
  },
  "path": "/volumes/ganeshagroup/ganesha1/39f13294-c062-43c2-97d6-77c875e1b020",
  "protocols": [
    3,
    4
  ],
  "pseudo": "/export_1",
  "security_label": true,
  "squash": "none",
  "transports": [
    "TCP"
  ]
}

Version-Release number of selected component (if applicable):
============================================================
# rpm -qa | grep nfs
libnfsidmap-2.5.4-25.el9.x86_64
nfs-utils-2.5.4-25.el9.x86_64
nfs-ganesha-selinux-5.9-1.el9cp.noarch
nfs-ganesha-5.9-1.el9cp.x86_64
nfs-ganesha-rgw-5.9-1.el9cp.x86_64
nfs-ganesha-ceph-5.9-1.el9cp.x86_64
nfs-ganesha-rados-grace-5.9-1.el9cp.x86_64
nfs-ganesha-rados-urls-5.9-1.el9cp.x86_64

# ceph --version
ceph version 19.1.0-3.el9cp (2032ce88d0c0820de58f7fde69952e9e1c790f42) squid (rc)




How reproducible:
===============
Everytime


Steps to Reproduce:
===============
1. Create ganesha cluster
2. Create a cephfs filesystem. 
3. Create an export out of filesystem
4. List info of the nfs export

# ceph nfs export info <nfs_cluster> /<export>

Actual results:
=============

Cmount_path is missing from default export file


Expected results:
==============
Cmount_path should be added to export file by default to fix the memory issues


Additional info: