Fixes for wrong namespace handling in some RBAC and missing dnsNames for TLS
### Motivation
Fixes old unused handling of namespace name in RBAC for autorecovery and bookkeeper.
Fixes Helm exception of missing key when not defining TLS dnsNames
### Modifications
Use namespace template in RBAC definitions for bookkeeper and autorecovery. Add if around every `toYaml .Values.tls.bookie.dnsNames` clause in TLS certs definitions.
### Verifying this change
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Co-authored-by: Sijie Guo <sijie@apache.org>
Fixes inability to validate self-signed certs from external clients
### Motivation
Currently self-signed certificates can only be used inside of the same cluster as they are labeled with internal dns names without the possibility of appending additional values. Some use-cases require the connection of external clients. This PR aims to allow users add additional dnsNames (IP or domain) to the self-signed certificates.
### Modifications
* Adds the ability to add `dnsNames` to self-signed certificates to any component like so:
```yaml
tls:
enabled: true
proxy:
enabled: true
dnsNames:
- test.example.com
```
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It remains possible to override the current release namespace by setting
the `namespace` value though this may lead to having the helm metadata
and the pulsar components in different namespaces
Fixes#66
### Motivation
Trying to deploy the chart in a namespace using the usual helm pattern fails for example
```
kubectl create ns pulsartest
helm upgrade --install pulsar -n pulsartest apache/pulsar
Error: namespaces "pulsar" not found
```
fixing that while keeping the helm metadata and the deployed objects in the same namespace requires declaring the namespace twice
```
kubectl create ns pulsartest
helm upgrade --install pulsar -n pulsartest apache/pulsar --set namespace=pulsartest
Error: namespaces "pulsar" not found
```
This is needlessly confusing for newcomers who follow the helm documentation and is contrary to helm best practices.
### Modifications
I changed the chart to use the context namespace `.Release.Namespace` by default while preserving the ability to override that by explicitly providing a namespace on the commande line, with the this modification both examples behave as expected
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Co-authored-by: Elad Dolev <elad@firebolt.io>
### Motivation
Give the ability to deploy multi-cluster instance on K8s clusters with non-default `clusterDomain`, and connect to external configuration-store
### Modifications
- give the ability to change cluster's name
- give the ability to change `clusterDomain`
- fix external configuration store functionality
- use broker ports variables
- use label templates, and add `component` label in several places
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