Add shelf3 POE switch to rack4.

Change-Id: Ia0ef3a177d316c69664caafc8b812b2f393a7fa1
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/435176
Reviewed-by: Kevin Lubick <kjlubick@google.com>
diff --git a/skolo/ansible/ssh.cfg b/skolo/ansible/ssh.cfg
index db437d3..aef2997 100644
--- a/skolo/ansible/ssh.cfg
+++ b/skolo/ansible/ssh.cfg
@@ -74,6 +74,10 @@
   Hostname rack4-shelf2-poe-switch
   ProxyJump chrome-bot@rack4:22
 
+Host switch-rack4-shelf3
+  Hostname rack4-shelf2-poe-switch
+  ProxyJump chrome-bot@rack4:22
+
 Host switch-rack1-shelf1
   Hostname rack1-shelf1-poe-switch
   ProxyJump chrome-bot@rack1:22
diff --git a/skolo/bash/skolo.sh b/skolo/bash/skolo.sh
index 9ddb3f3..1d9d21d 100644
--- a/skolo/bash/skolo.sh
+++ b/skolo/bash/skolo.sh
@@ -28,3 +28,4 @@
 
 alias skolo_rack4_shelf1_switch='google-chrome https://localhost:7401; ssh -L 7401:rack4-shelf1-poe-switch:443 rack4'
 alias skolo_rack4_shelf2_switch='google-chrome https://localhost:7402; ssh -L 7402:rack4-shelf2-poe-switch:443 rack4'
+alias skolo_rack4_shelf3_switch='google-chrome https://localhost:7402; ssh -L 7403:rack4-shelf3-poe-switch:443 rack4'