Adds go dep used by an Enterprise feature. (#29645)

Signed-off-by: bergquist <carl.bergquist@gmail.com>

go.mod

@@ -85,6 +85,7 @@ require (
 	golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43
 	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
 	golang.org/x/sys v0.0.0-20201022201747-fb209a7c41cd // indirect
+	golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e
 	golang.org/x/tools v0.0.0-20201023150057-2f4fa188d925 // indirect
 	gonum.org/v1/gonum v0.6.0
 	google.golang.org/api v0.33.0

go.sum

@@ -1553,6 +1553,7 @@ golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxb
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e h1:EHBhcS0mlXEAVwNyO2dLfjToGsyY4j24pTs2ScHnX7s=
 golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180525024113-a5b4c53f6e8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

pkg/extensions/main.go

@@ -19,6 +19,7 @@ import (
 	_ "github.com/russellhaering/goxmldsig"
 	_ "github.com/stretchr/testify/require"
 	_ "github.com/timberio/go-datemath"
+	_ "golang.org/x/time/rate"
 	_ "gopkg.in/square/go-jose.v2"
 )