Turn off SSHD in gerrit.config by default

The current implementation of the gerrit-slave and gerrit-master helm
charts do not allow to expose ssh, but Gerrit was configured to start
SSHD (default for Gerrit).

This change turns off the SSHD by default in both charts. This should
make the startup faster, since the SSH daemon does not have to be
started.

Change-Id: Idc2cfdd9b97e90ff7685bd07382eb514116fd346
diff --git a/helm-charts/gerrit-master/values.yaml b/helm-charts/gerrit-master/values.yaml
index fad2eee..a6cfa9a 100644
--- a/helm-charts/gerrit-master/values.yaml
+++ b/helm-charts/gerrit-master/values.yaml
@@ -141,6 +141,8 @@
       [httpd]
         # If using an ingress use proxy-http or proxy-https
         listenUrl = proxy-http://*:8080/
+      [sshd]
+        listenAddress = off
       [transfer]
         timeout = 120 s
       [user]
diff --git a/helm-charts/gerrit-slave/values.yaml b/helm-charts/gerrit-slave/values.yaml
index bf7415d..43c804e 100644
--- a/helm-charts/gerrit-slave/values.yaml
+++ b/helm-charts/gerrit-slave/values.yaml
@@ -231,6 +231,8 @@
       [httpd]
         # If using an ingress use proxy-http or proxy-https
         listenUrl = proxy-http://*:8080/
+      [sshd]
+        listenAddress = off
       [transfer]
         timeout = 120 s
       [user]