Description of problem:
When running the command

openshift-install agent create pxe-files

on completion there are files left over in the tmp directory.

$ ls -al /tmp/agent3927770608
total 12
drwx------.  6 stack stack   61 Feb 27 16:41 .
drwxrwxrwt. 15 root  root  8192 Feb 27 16:41 ..
drwxr-xr-x.  3 stack stack   20 Feb 27 16:41 EFI
drwxr-xr-x.  2 stack stack   83 Feb 27 16:41 coreos
drwxr-xr-x.  3 stack stack   60 Feb 27 16:41 images
drwxr-xr-x.  2 stack stack  156 Feb 27 16:41 isolinux

Due to the size of the files this can cause problems when running this command often.

Version-Release number of selected component (if applicable): 4.16 and later versions

How reproducible: every time

Steps to Reproduce
1. Run openshift-install agent create pxe-files
2. Upon completion of the command look in /tmp to see files left over.
Actual results:
Files still remain in /tmp dir.

Expected results:
Files should be removed.