nfs-kernel-server: update to v2.8.4

nfs-kernel-server: update to v2.8.4

Update to v2.8.4

Shortlog:
Anna Schumaker (4):
      rpcctl: Add support for `rpcctl switch add-xprt`
      rpcctl: Display new rpc_clnt sysfs attributes
      rpcctl: Add support for the xprtsec sysfs attribute
      rpcctl: Rename {read,write}_addr_file()

Antonio Alvarez Feijoo (3):
      nfsroot-generator: do not fail if nfsroot is not configured
      systemd: Add a generator to mount /sysroot via NFSv4 in the initrd
      systemd: Allow nfs-idmapd.service to be started without the server

Scott Mayhew (3):
      rpc-statd.service: define dependency on both rpcbind.service and rpcbind.socket
      nfsdctl: fix lockd config during autostart
      nfsdctl: debug logging fixups

Steve Dickson (3):
      Release: 2.8.4
      configure.ac: AC_PROG_GCC_TRADITIONAL is obsolete.
      nfsdctl: Warning Clean Up

zhangyaqi (2):
      gssd:fix the possible buffer overflow in get_full_hostname
      nfsdcld:Fix a memory leak

Thiago Becker (1):
      nfsrahead: modify get_device_info logic

Yaakov Selkowitz (1):
      Fix build with glibc-2.42

Build system: x86/64
Build-tested: x86/64-glibc
Run-tested: x86/64-glibc

Signed-off-by: John Audia <[email protected]>