Display the command to mount the share when it is exported through NFS

Add appliances to dependencies in share details so that current
appliance ip can be obtained
Modify nfs_exports_table to display the mount command if any nfs exports
are present
style changes for code section
Merge pull request #86 from sujeetsr/issue#75_nfs_export_command

Display the command to mount the share when it is exported through NFS