Create LOGDIR earlier in the process
Create LOGDIR earlier in the process

Specifically, before _install_epel_and_rdo is called, that may need to log an
error.

Change-Id: I4979eb9530e6ea366c99d168587b87ea358dc908

samgoon/devstack,Mahito/devstack,openstack-dev/devstack,bswartz/devstack,bigswitch/devstack,nawawi/openstack,bigswitch/devstack,group-policy/devstack,noironetworks/devstack,bswartz/devstack,nawawi/openstack,group-policy/devstack,dirkmueller/devstack,Mahito/devstack,noironetworks/devstack,openstack-dev/devstack,samgoon/devstack,richliu/devstack,richliu/devstack,dtroyer/devstack,dtroyer/devstack,dirkmueller/devstack