[Vendor Update] go-swagger v0.20.1 -> v0.21.0 (#9410)

* Update go-swagger v0.20.1 -> v0.21.0

* go mod tidy

Author: 6543

go.mod

@@ -40,10 +40,9 @@ require (
 	github.com/gliderlabs/ssh v0.2.2
 	github.com/glycerine/go-unsnap-stream v0.0.0-20190901134440-81cf024a9e0a // indirect
 	github.com/go-openapi/jsonreference v0.19.3 // indirect
-	github.com/go-openapi/runtime v0.19.5 // indirect
 	github.com/go-redis/redis v6.15.2+incompatible
 	github.com/go-sql-driver/mysql v1.4.1
-	github.com/go-swagger/go-swagger v0.20.1
+	github.com/go-swagger/go-swagger v0.21.0
 	github.com/gobwas/glob v0.2.3
 	github.com/gogs/chardet v0.0.0-20191104214054-4b6791f73a28
 	github.com/gogs/cron v0.0.0-20171120032916-9f6c956d3e14
@@ -74,6 +73,7 @@ require (
 	github.com/pkg/errors v0.8.1
 	github.com/pquerna/otp v0.0.0-20160912161815-54653902c20e
 	github.com/prometheus/client_golang v1.1.0
+	github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4 // indirect
 	github.com/prometheus/procfs v0.0.4 // indirect
 	github.com/quasoft/websspi v1.0.0
 	github.com/remyoudompheng/bigfft v0.0.0-20190321074620-2f0d2b0e0001 // indirect
@@ -93,6 +93,7 @@ require (
 	github.com/unknwon/paginater v0.0.0-20151104151617-7748a72e0141
 	github.com/urfave/cli v1.20.0
 	github.com/yohcop/openid-go v0.0.0-20160914080427-2c050d2dae53
+	go.etcd.io/bbolt v1.3.3 // indirect
 	golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413
 	golang.org/x/net v0.0.0-20191101175033-0deb6923b6d9
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45