fix: changed to private cli for cifs_ntlm_enabled

[Hardikl]

All apis are svm scoped and svm is unique in cluster. Changing instance key from svm_uuid to svm.

A250-41-42-43::> vserver show
                               Admin      Operational Root
Vserver     Type    Subtype    State      State       Volume     Aggregate
----------- ------- ---------- ---------- ----------- ---------- ----------
A250-41-42-43 
            admin   -          -          -           -          -
A250-42     node    -          -          -           -          -
A250-43     node    -          -          -           -          -
astra_ci_vc_esxi_24_75_data 
            data    default    running    running     astra_ci_  vmware_
                                                      vc_esxi_   aggr
                                                      24_75_
                                                      data_root
nfs_vserver data    default    running    running     nfs_       astra_
                                                      vserver_   aggr2
                                                      root
nvmevs1     data    default    running    running     nvmevs1_   astra_
                                                      root       aggr3
vmware_vm   data    default    running    running     vmware_vm_ astra_
                                                      root       aggr1
7 entries were displayed.

A250-41-42-43::> vserver create -vserver nvmevs1

Error: command failed: The Vserver name is already used by another Vserver. 

Prior:

With Changes: