PLT-6341/PLT-6342 Update gorp to mattermost fork and add connection timeout setting (#6410)

* Update gorp to mattermost fork and add connection timeout setting

* Add go dependency

* Rename from connection timeout to query timeout

* Properly add gorp dependency

glide.yaml

@@ -11,8 +11,6 @@ import:
   - opengraph
 - package: github.com/fsnotify/fsnotify
   version: v1.4.2
-- package: github.com/go-gorp/gorp
-  version: 0c9bc0918534d133cedb439a24adc7cbe66e4a9d
 - package: github.com/go-ldap/ldap
   version: v2.5.0
 - package: github.com/go-sql-driver/mysql
@@ -83,3 +81,4 @@ import:
 - package: github.com/cpanato/html2text
 - package: gopkg.in/olivere/elastic.v5
   version: v5.0.38
+- package: github.com/mattermost/gorp