Task: Tolerate a missing ctx.config
Task: Tolerate a missing ctx.config

When we initialize a ConsoleLog task during FOG reimaging, the ctx
object has no config attribute.

Signed-off-by: Zack Cerza <d7cdf09fc0f0426e98c9978ee42da5d61fa54986@redhat.com>

SUSE/teuthology,dmick/teuthology,dmick/teuthology,ceph/teuthology,ceph/teuthology,SUSE/teuthology,ktdreyer/teuthology,SUSE/teuthology,ktdreyer/teuthology,dmick/teuthology