Add defaults to collect_fetch_logs in collect_logs
Add defaults to collect_fetch_logs in collect_logs

now the behavior is that if collect_fetch_logs is not
defined it won't enable the feature, as the naming of
the variable suggests it is an enable this feature flag

Change-Id: I2c7119a7170be43f93b0537c0fd6c57b183d6907

redhat-openstack/octario,redhat-openstack/octario