This is a preparation to removing conf.py and config/wic.conf
from the codebase.
confmgr object is complicated for no reason and almost
useless as all configuration info comes from command line and
bitbake variables. It's used it creator.py to store information
about output directory, logs and some never used functionality
like tmpfs for future use, which doesn't actually happen.
[YOCTO #10619]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
