Some k8s secrets created when deploying managed applications are
unhelpful to the end user or are outright not meant to be shown, because
they contain internal credentials not meant to be presented to the user.
This patch adds an `apps.cozystack.io/tenantresource=false` label to
such resources which will be later used to filter out such secrets in
the web UI.
```release-note
[platform] Mark non-user-facing secrets as such to avoid clutter in the
dashboard and leaking internal credentials.
```
Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>
