krb5 profile config support

krb5 profile config support

create openafs-client.conf and openafs-server.conf in respective ETC
dirs. enable afsd, ptserver, vlserver and fileserver option parsing from it

[afsd]
            dynroot = true
            dcache = 800
            cachedir = /var/db/openafs/cache

Change-Id: I4bae437d7c8f54daa5dadfaeb875cdd185809d61
Reviewed-on: http://gerrit.openafs.org/7903
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>