Add toleration to secret-observer cronjob

A toleration needs to be added to all resources that create pods since
the node-role.kubernetes.io/master taint will be restored to all master
nodes. This will ensure that the pods will run on the master node.

Test Plan: Install oidc-auth-apps with taint enabled on the node and
verify secret-observer triggers pods restart on secret changes

PASS: Install oidc-auth-apps with taint enabled
PASS: Update and reapply oidc-auth-apps with taint enabled
PASS: Verify that changing a secret causes its related resources to be
restarted (e.g.: dex-client-secret/stx-oidc-client)

Regression: System and secret-observer builds and works the same when
taint is not enabled

PASS: Verify oidc-auth-apps application builds and installs properly
PASS: Verify updating the secret-observer cronjob schedule works the
same
PASS: Verify secret-observer performs pods restarts on secret changes
when taint is disabled

Story: 2009232
Task: 43505
Depends-On: https://review.opendev.org/c/starlingx/helm-charts/+/812510
Signed-off-by: Rafael Camargos <RafaelLucas.Camargos@windriver.com>
Change-Id: Iaf6caa05943661bfabb5c7c4b92ad9f7c5a6e528

stx-oidc-auth-helm/stx-oidc-auth-helm/manifests/manifest.yaml

@@ -139,6 +139,10 @@ data:
       - secretName: "local-dex.tls"
         filename: "tls.crt"
         deploymentToRestart: "oidc-dex"
+    tolerations:
+      - key: "node-role.kubernetes.io/master"
+        operator: "Exists"
+        effect: "NoSchedule"
   source:
     location: http://172.17.0.1:8080/helm_charts/stx-platform/secret-observer-0.1.0.tgz
     subpath: secret-observer