Migrate from dep to go module

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/github.com/hpcloud/tail/CHANGES.md

@@ -0,0 +1,63 @@
+# API v1 (gopkg.in/hpcloud/tail.v1)
+
+## April, 2016
+
+* Migrated to godep, as depman is not longer supported
+* Introduced golang vendoring feature
+* Fixed issue [#57](https://github.com/hpcloud/tail/issues/57) related to reopen deleted file 
+
+## July, 2015
+
+* Fix inotify watcher leak; remove `Cleanup` (#51)
+
+# API v0 (gopkg.in/hpcloud/tail.v0)
+
+## June, 2015
+
+* Don't return partial lines (PR #40)
+* Use stable version of fsnotify (#46)
+
+## July, 2014
+
+* Fix tail for Windows (PR #36)
+
+## May, 2014
+
+* Improved rate limiting using leaky bucket (PR #29)
+* Fix odd line splitting (PR #30)
+
+## Apr, 2014
+
+* LimitRate now discards read buffer (PR #28)
+* allow reading of longer lines if MaxLineSize is unset (PR #24)
+* updated deps.json to latest fsnotify (441bbc86b1)
+
+## Feb, 2014
+
+* added `Config.Logger` to suppress library logging
+
+## Nov, 2013
+
+* add Cleanup to remove leaky inotify watches (PR #20)
+
+## Aug, 2013
+
+* redesigned Location field (PR #12)
+* add tail.Tell (PR #14)
+
+## July, 2013
+
+* Rate limiting (PR #10)
+
+## May, 2013
+
+* Detect file deletions/renames in polling file watcher (PR #1)
+* Detect file truncation
+* Fix potential race condition when reopening the file (issue 5)
+* Fix potential blocking of `tail.Stop` (issue 4)
+* Fix uncleaned up ChangeEvents goroutines after calling tail.Stop
+* Support Follow=false
+
+## Feb, 2013
+
+* Initial open source release