Cherry-pick release:   - Check for thin_is binary in path for devicemapper when using ThinPoolWatcher   - Fix uint64 overflow issue for CPU stats
Cherry-pick release:
  - Check for thin_is binary in path for devicemapper when using ThinPoolWatcher
  - Fix uint64 overflow issue for CPU stats

erSitzt/cadvisor,erSitzt/cadvisor,linux-on-ibm-z/cadvisor,erSitzt/cadvisor,erSitzt/cadvisor,linux-on-ibm-z/cadvisor,erSitzt/cadvisor,linux-on-ibm-z/cadvisor