Revert "Update links to jenkins3.noms.io" (#2918)

README.md

@@ -2,7 +2,7 @@
 <br>
 [Command-Line Tour](doc/cli-tour.md)&nbsp; | &nbsp;[Go SDK Tour](doc/go-tour.md)&nbsp; | &nbsp;[JavaScript SDK Tour](doc/js-tour.md)&nbsp; | &nbsp;[Documentation](doc/index.md)&nbsp; | &nbsp;[Project Status](#status)&nbsp; | &nbsp;[Download](https://s3-us-west-2.amazonaws.com/download.noms.io/index.html?prefix=jobs/NomsBuildGoBinaries/)
 <br><br>
-[![Build Status](http://jenkins3.noms.io/job/NomsMasterBuilder/badge/icon)](http://jenkins3.noms.io/job/NomsMasterBuilder)
+[![Build Status](http://jenkins.noms.io/job/NomsMasterBuilder/badge/icon)](http://jenkins.noms.io/job/NomsMasterBuilder)
 [![codecov](https://codecov.io/gh/attic-labs/noms/branch/master/graph/badge.svg)](https://codecov.io/gh/attic-labs/noms)
 [![GoDoc](https://godoc.org/github.com/attic-labs/noms?status.svg)](https://godoc.org/github.com/attic-labs/noms)
 [![Slack](http://slack.noms.io/badge.svg)](http://slack.noms.io)

codecov.yml

@@ -2,7 +2,7 @@ codecov:
   branch: master
   bot: "mikegray"
   ci:
-    - "jenkins3.noms.io"
+    - "jenkins.noms.io"
 
 coverage:
   precision: 2         # how many decimal places to display in the UI: 0 <= value <= 4

tools/run_pr_builder.sh

@@ -4,7 +4,7 @@
 # Licensed under the Apache License, version 2.0:
 # http://www.apache.org/licenses/LICENSE-2.0
 
-# This script runs on the Noms PR Builder (http://jenkins3.noms.io/job/NomsPRBuilder).
+# This script runs on the Noms PR Builder (http://jenkins.noms.io/job/NomsPRBuilder).
 
 set -eux