openssh: Add systemd support

-Remove dependency on meta-systemd

Signed-off-by: Muhammad Shakeel <muhammad_shakeel@mentor.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
lighttpd: Add systemd support

- Remove dependency on meta-systemd

Signed-off-by: Muhammad Shakeel <muhammad_shakeel@mentor.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
rpcbind: Add systemd support

- Remove dependency on meta-systemd

Signed-off-by: Muhammad Shakeel <muhammad_shakeel@mentor.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
nfs-utils: Add systemd support

- Remove dependency on meta-systemd

Signed-off-by: Muhammad Shakeel <muhammad_shakeel@mentor.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
systemd: Remove base_libdir if installed only for systemd_unitdir

If a recipe installs systemd_unitdir and it is a non-systemd build than
systemd.bbclass deletes systemd_unitdir (/lib/systemd/) but not
base_libdir (/lib). In this case if base_libdir is empty than following
QA Issue is reported.

ERROR: QA Issue: openssh: Files/directories were installed but not shipped
  /lib

If base_libdir was installed due to systemd_unitdir installation than for
non-systemd build it should also be removed.

Signed-off-by: Muhammad Shakeel <muhammad_shakeel@mentor.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
systemd.bbclass: get the correct /lib directory

By using os.path.dirname(systemd_unitdir) we get the correct /lib directory instead of
dealing with possibly multilib directories.  This address a QA Error for shipped/not
installed /lib with multilib and x32.

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>