Update move gear for build-deploy changes

Disable the gear in the proxies prior to move if app is scalable

Call update_cluster after the move to update all proxy gear registries
and proxy configs if the app is scalable

Reenable the gear in the proxies after the move if the app is scalable
Merge pull request #34 from ncdc/move-gear-update-cluster

Modify move gear to support rotate out/in and updating the gear registries and proxy configs
WIP error handling for proxy updates
Fix failing tests
Minor prepare changes