[gssapi/gssproxy] 856b2b: Generalize nfs config file example

[jacobshivers]

  Branch: refs/heads/main
  Home:   https://github.com/gssapi/gssproxy
  Commit: 856b2b6a7a96e4ff319d5ea8c21f95937f461f2e
      https://github.com/gssapi/gssproxy/commit/856b2b6a7a96e4ff319d5ea8c21f959...
  Author: jacobshivers <93015798+jacobshivers(a)users.noreply.github.com&gt;
  Date:   2021-10-26 (Tue, 26 Oct 2021)

  Changed paths:
    M Makefile.am
    M contrib/gssproxy.spec.in
    A docs/network_fs_clients.md
    A examples/99-network-fs-clients.conf.in
    R examples/99-nfs-client.conf.in

  Log Message:
  -----------
  Generalize nfs config file example

Update and rename 99-nfs-client.conf.in to 99-network-fs-clients.conf.in
Generalized name as this file can be used by both NFS and SMB upcall
methods, i.e. rpc.gssd and cifs.upcall respectively.

Create network_fs_clients.md. The file describes steps to have
differentiated access methods for client side NFS and SMB if needed.

Modified Makefile.am and contrib/gssproxy.spec.in for instances of
99-nfs-client.conf to 99-network-fs-clients.conf.

Signed-off-by: Jacob Shivers <jshivers(a)redhat.com&gt;