Adds support to testpmd to load a set of cmdline CLI commands at runtime.
This can be helpful when needing to cut-n-paste many commands where
cut-n-paste may not be practical.
testpmd> load /home/ubuntu/somefile.txt
Signed-off-by: Allain Legacy <allain.legacy@windriver.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>