Memory usage: Move after_commit UpdatePriority.run_update_thread to controller

default BalancePeriod is too short

Excessive memory usage with huge containers

Go arvados.Client retry with backoff

Recognize EC2 InsufficientFreeAddressesInSubnet error as a quota error

Merge R SDK PR

controller limits log create requests

Option to re-submit container with higher memory request if previous job was killed and crunchstat shows >90% memory usage

keep_cache_disk runtime constraint is undocumented

Configurable limit percentage of MaxInstances eligible to run top-level or arvados-cwl-runner containers

Fix flaky test railsRestartSuite.TestConfigReload in lib/controller