Merge pull request #289 from thaJeztah/19.03_backport_bump_gorilla_mux

[19.03 backport] bump gorilla/mux v1.7.2
Upstream-commit: 0ff52c285d25d8c91eca98762c37f7cd1284fc94
Component: engine

Author: andrewhsu

components/engine/vendor.conf

@@ -5,7 +5,7 @@ github.com/docker/libtrust                          9cbd2a1374f46905c68a4eb3694a
 github.com/go-check/check                           4ed411733c5785b40214c70bce814c3a3a689609 https://github.com/cpuguy83/check.git
 github.com/golang/gddo                              9b12a26f3fbd7397dee4e20939ddca719d840d2a
 github.com/google/uuid                              0cd6bf5da1e1c83f8b45653022c74f71af0538a4 # v1.1.1
-github.com/gorilla/mux                              a7962380ca08b5a188038c69871b8d3fbdf31e89 # v1.7.0
+github.com/gorilla/mux                              ed099d42384823742bba0bf9a72b53b55c9e2e38 # v1.7.2
 github.com/Microsoft/opengcs                        a10967154e143a36014584a6f664344e3bb0aa64
 
 github.com/creack/pty                               2769f65a3a94eb8f876f44a0459d24ae7ad2e488 # v1.1.7