bug fix: Pass the right data format to run_command()

run_command() expects a list of command and arguments instead of a
string.
Fix it to avoid error on Kimchi start up on openSUSE systems:

[Errno 2] No such file or directory
Failed to run command: z y p p e r   - - h e l p.

Signed-off-by: Aline Manera <alinefm@linux.vnet.ibm.com>