Updates for latest Brooklyn
Respect location’s choice of image/hardware

- only customise the choice of image/hardware if it has not been
  explicitly set in the location config
Fix weave script path change
Delete remnants of merge from DockerHostImpl
Merge pull request #43 from sjcorbett/master

Delete remnants of merge from DockerHostImpl
Convert doStop call to preStop and  postStop
Fix logging on container close
Fix NPE when no provisioning strategies available on an entity
Make CPU usage comparator null safe
Launch syntax for weave command changed
Respect version for lxc-docker package on Ubuntu
Remove cast of machine to JcloudsSshMachineLocation

It might not be true if the DockerHost entity is deployed to a BYON
location.
Add CLOCKER_OPTS variable to startup script
Merge pull request #45 from sjcorbett/cast

Remove cast of machine to JcloudsSshMachineLocation
Increase scan interval
New DockerHosts need to be started explicitly now
Do not embed environment into container creation
Create task for reboot SSHable waiting
Log clocker.sh console output to file
Add Clocker Console