GitLab

Add PSP and related role/rolebinding/SA resources to logging chart.
The PSP contains restricted rules + hostPath volume.
Also, remove unnecessary privileged escalation from log-aggregator.

Changes:
1. fluentd: add sub charts fluentd-linux and fluentd-:windows
2. log-aggregator: remove useless service account
3. log-aggregator: add sub charts log-aggregator-linux and
log-aggregator-windows

Problem:
Daemonset api version extensions/v1beta1 is deperated in 1.16

Solution:
Use the capabilities API versions defined in template

Issue:
https://github.com/rancher/rancher/issues/21770

problem:
After we refactored the logging, we can not deploy logging tools in an
air gap environment.

Solution:
Add the ability to use the private image registry when deploying logging
tools

Issue:
https://github.com/rancher/rancher/issues/17568

Problem:
we want to use catalog to deploy system tools

Solution:
add logging chart