… bootstrap_skip_services

During provisioning starting services can be problematic, for example in a
kickstart environment before first boot. Inability to start services can result
in the bootstrap procedure failing, resulting in loss of key information like
the hub a host was bootstrapped to. This change allows bootstrap to skip
managing services if the class bootstrap_skip_services is defined.

Ticket: ENT-11932
Changelog: Title

For environments where CFEngine services have to be started in
some special way.

Ticket: ENT-11932
Changelog: cf-agent now has a new option
           --skip-bootstrap-service-start to skip starting
           CFEngine services during the bootstrap process