Bump src/file-server

[#76563270]

Bump cloudfoundry-incubator/file-server:
  Abhijit Hiremagalur:
     Autowire dropsonde for go metrics ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/file-server/builds/34238936 )
Merge remote-tracking branch 'origin/develop' into develop
Create final release 0.322 for build 76