Bump dea_next

$ git shortlog 15d52e...96d308

Kowshik Prakasam (2):
      Convert time to string to support schemata.
      Revert "Don't map port when the application doesn't have URIs"

Pieter Noordhuis (23):
      Import github.com/howeyc/fsnotify
      Add streaming handler based on fsnotify
      Stop streaming when the file is renamed
      Fix stream handler test teardown function
      Open/close file in test for every write
      Clean up max latency writer
      Use otherwise unused variable as loop condition
      Make stop function idempotent
      Add idle timeout to stream handler
      Hook up stream handler in directory server
      Run existing tests via gocheck
      Initialize logger in log.go/log_test.go
      Move helper functions to helper_test.go
      Refactor DeaClient
      Move helper function to helper_test.go
      Don't use hard-coded ports in tests
      Add test for URL passthrough
      Add basic tests for max latency writer
      Fix double stop for max latency writer
      Use closed port in test where DEA is unreachable
      Fix and test forwarding headers from the DEA
      Merge changes I8e47089c,I463180e0,If7f8a2a0,I17dcd2c6,I0975c1e0,Ida77ba2c,I85c56363,I1f380b41,I7e5
      Reinitialize logger from directoryserver.Start

Change-Id: I570289d438001b1b30376868e0fa98606b5836a7