update BUILD files

vendor/github.com/coreos/go-oidc/http/BUILD

@@ -8,6 +8,7 @@ go_library(
         "http.go",
         "url.go",
     ],
+    importpath = "github.com/coreos/go-oidc/http",
     visibility = ["//visibility:public"],
 )
 

vendor/github.com/coreos/go-oidc/jose/BUILD

@@ -12,6 +12,7 @@ go_library(
         "sig.go",
         "sig_rsa.go",
     ],
+    importpath = "github.com/coreos/go-oidc/jose",
     visibility = ["//visibility:public"],
 )
 

vendor/github.com/coreos/go-oidc/key/BUILD

@@ -10,6 +10,7 @@ go_library(
         "rotate.go",
         "sync.go",
     ],
+    importpath = "github.com/coreos/go-oidc/key",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/coreos/go-oidc/jose:go_default_library",

vendor/github.com/coreos/go-oidc/oauth2/BUILD

@@ -7,6 +7,7 @@ go_library(
         "error.go",
         "oauth2.go",
     ],
+    importpath = "github.com/coreos/go-oidc/oauth2",
     visibility = ["//visibility:public"],
     deps = ["//vendor/github.com/coreos/go-oidc/http:go_default_library"],
 )

vendor/github.com/coreos/go-oidc/oidc/BUILD

@@ -13,6 +13,7 @@ go_library(
         "util.go",
         "verification.go",
     ],
+    importpath = "github.com/coreos/go-oidc/oidc",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/coreos/go-oidc/http:go_default_library",