Upgrading server dependancies (#6984)

vendor/github.com/magiconair/properties/CHANGELOG.md

@@ -1,6 +1,6 @@
 ## Changelog
 
-### Unreleased
+### [1.7.3](https://github.com/magiconair/properties/tags/v1.7.3) - 10 Jul 2017
 
  * [Issue #17](https://github.com/magiconair/properties/issues/17): Add [SetValue()](http://godoc.org/github.com/magiconair/properties#Properties.SetValue) method to set values generically
  * [Issue #22](https://github.com/magiconair/properties/issues/22): Add [LoadMap()](http://godoc.org/github.com/magiconair/properties#LoadMap) function to load properties from a string map

vendor/github.com/magiconair/properties/README.md

@@ -1,7 +1,7 @@
 Overview [![Build Status](https://travis-ci.org/magiconair/properties.svg?branch=master)](https://travis-ci.org/magiconair/properties)
 ========
 
-#### Current version: 1.7.2
+#### Current version: 1.7.3
 
 properties is a Go library for reading and writing properties files.