chore(dependencies): Autobump korkVersion (spinnaker#474)

Co-authored-by: root <root@59d9c736198e>

chore(dependencies): Autobump korkVersion (spinnaker#459)

Co-authored-by: root <root@1d7e715ab9f3>

fix(notifications): Preventing resubmitting notifications (spinnaker#392

)

* fix(notifications): Preventing resubmitting notifications

- remove retrySupport use from echo notifier
- only allow one worker to send notifications at a time

* - add logging

chore(*): Allow a placeholder account with the empty account (spinnak…

…er#376)

- updated default values to empty account
- made Resource.getProperty public
- updated work configurator to account for the placeholder account

chore(dependencies): Autobump korkVersion (spinnaker#371)

Co-authored-by: Travis CI User <[email protected]>

fix(state): Fixing upserting a state (spinnaker#364)

- fixed upsert to return the passed state rather than throwing

fix(*): Fixing npe in elb handler (spinnaker#356)

- fixed an NPE when checking for server group references

chore(metrics): Cleaning up notification metrics (spinnaker#349)

- cleaning up notification metrics

fix(config): Make dryRun overrideable at resource level (spinnaker#346)

- make global dryRun overrideable

feat(aws): Adding launch configurations cleanup support (spinnaker#345)

* feat(aws): Adding launch configurations cleanup support

- added initial launch configs support
- TODO: Delete logic

* - Fixed failing test

* - Completed delete logic