Update Gerrit permissions for global service users (built at http://cl/899219124)

Added permissions:
  Section [refs/heads/*]:
    Read:
      ALLOW: autoupdate-vigil-service-accounts
      ALLOW: autoupdate-service-accounts
      ALLOW: autoupdate-onboarding-service-accounts
    Submit:
      ALLOW: autoupdate-vigil-service-accounts
      ALLOW: autoupdate-service-accounts
    Push:
      ALLOW: autoupdate-vigil-service-accounts
      ALLOW: autoupdate-service-accounts
  Section [GLOBAL_CAPABILITIES]:
    viewAllAccounts:
      ALLOW: autoupdate-vigil-service-accounts
      ALLOW: autoupdate-service-accounts
      ALLOW: autoupdate-onboarding-service-accounts