ni-systemformat: add missing RDEPENDs
ni-systemformat: add missing RDEPENDs

The nisystemformat script calls some external dependencies which deserve
RDEPENDs:
* lsblk from util-linux-lsblk
* uname from coreutils
* ninetcfgutil from ni-netcfgutil
* mkfs.ext4 from e2fsprogs-mke2fs

Add RDEPENDs on those packages.

Signed-off-by: Alex Stewart <04cdb2793e4fb0120cc30d1c823099f3862701f4@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt