Periodically clear Store's path info cache

Dependencies

• [2] IKJBYIGY Update to reflect BinaryCacheStore changes
• [*] MHVIT4JY Split hydra-queue-runner.cc more

Change contents

• edit in src/hydra-queue-runner/queue-monitor.cc at line 39
  [4.20820]

  [2.456]
  + localStore->clearPathInfoCache();

  +