Bump sockjs-go from 2.0.1 to 2.1.0 (#5073)

Latest release v2.0.1 uses CDN that have gone.

go.mod

@@ -6,13 +6,12 @@ require (
 	github.com/docker/distribution v2.7.1+incompatible
 	github.com/emicklei/go-restful v2.12.0+incompatible
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/igm/sockjs-go v2.0.1+incompatible // indirect
 	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
 	github.com/prometheus/client_golang v1.5.1
 	github.com/spf13/pflag v1.0.5
 	golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e
 	golang.org/x/text v0.3.2
-	gopkg.in/igm/sockjs-go.v2 v2.0.1
+	gopkg.in/igm/sockjs-go.v2 v2.1.0
 	gopkg.in/square/go-jose.v2 v2.4.1
 	gopkg.in/yaml.v2 v2.2.8
 	k8s.io/api v0.18.1

go.sum

@@ -184,6 +184,8 @@ github.com/gophercloud/gophercloud v0.1.0/go.mod h1:vxM41WHh5uqHVBMZHzuwNOHh8XEo
 github.com/gorilla/websocket v0.0.0-20170926233335-4201258b820c/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
@@ -195,8 +197,6 @@ github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
-github.com/igm/sockjs-go v2.0.1+incompatible h1:iyv0auU1Xh1KC8N+GIiLPa3zZXwRsfRZTIzo09UzeUU=
-github.com/igm/sockjs-go v2.0.1+incompatible/go.mod h1:Yu6pvqjNniWNJe07LPObeCG6R77Qc97C6Kss0roF8tU=
 github.com/imdario/mergo v0.3.5 h1:JboBksRwiiAJWvIYJVo46AfV+IAIKZpfrSzVKj42R4Q=
 github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
@@ -441,8 +441,8 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/igm/sockjs-go.v2 v2.0.1 h1:TJr+r4W3oNGANvL5UEH4bIemyXL84+qlO2HIJDOyLGk=
-gopkg.in/igm/sockjs-go.v2 v2.0.1/go.mod h1:xvdpHZ3OpjP0TzQzl+174DglrrnYZKVd6qHPIX20Z1Q=
+gopkg.in/igm/sockjs-go.v2 v2.1.0 h1:Ehqymxnfkkwi8R7SZIUARn77M0slA8vki0VgcfOdALw=
+gopkg.in/igm/sockjs-go.v2 v2.1.0/go.mod h1:9l1o9p5TJvh2l+Q0EGE8USVB69QPfcvI7fR0HmbCk/8=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=