slight refactor to split up the minion and certmaster
option migrations

this should migrate listen_addr and autosign settings

rename the "funcmaster.*" to "certmaster.*"

We were copying the /etc/pki/func/ contents to a subdir of
/etc/pki/certmaster instead of into the dir directly. Fixed.

default "/etc/pki/certmaster".

doesn't really work, istead do it the old fashioned way and use
ConfigParser directly.

and have migrated it