* Add missing license headers and .rat-excludes
* Fix .rat-excludes files
### Motivation
As part of our updated release process, we need to make sure that all relevant files have license headers.
### Modifications
* Add license headers formatted appropriately for each file type
### Verifying this change
The follow script shows that the solution is complete:
```shell
$ java -jar ../apache-rat-0.15/apache-rat-0.15.jar . -E .rat-excludes
Ignored 18 lines in your exclusion files as comments or empty lines.
*****************************************************
Summary
-------
Generated at: 2022-10-20T17:54:42-05:00
Notes: 4
Binaries: 1
Archives: 0
Standards: 92
Apache Licensed: 92
Generated Documents: 0
JavaDocs are generated, thus a license header is optional.
Generated files do not require license headers.
0 Unknown Licenses
*****************************************************
Files with Apache License headers will be marked AL
Binary files (which do not require any license headers) will be marked B
Compressed archives will be marked A
Notices, licenses etc. will be marked N
AL ./.asf.yaml
AL ./.rat-excludes
N ./LICENSE
N ./NOTICE
AL ./README.md
AL ./Vagrantfile
AL ./license_test.go
AL ./charts/pulsar/.helmignore
AL ./charts/pulsar/Chart.yaml
N ./charts/pulsar/LICENSE
N ./charts/pulsar/NOTICE
AL ./charts/pulsar/values.yaml
B ./charts/pulsar/charts/kube-prometheus-stack-41.5.1.tgz
AL ./charts/pulsar/templates/_autorecovery.tpl
AL ./charts/pulsar/templates/_bookkeeper.tpl
AL ./charts/pulsar/templates/_broker.tpl
AL ./charts/pulsar/templates/_configurationstore.tpl
AL ./charts/pulsar/templates/_helpers.tpl
AL ./charts/pulsar/templates/_toolset.tpl
AL ./charts/pulsar/templates/_zookeeper.tpl
AL ./charts/pulsar/templates/autorecovery-configmap.yaml
AL ./charts/pulsar/templates/autorecovery-podmonitor.yaml
AL ./charts/pulsar/templates/autorecovery-rbac.yaml
AL ./charts/pulsar/templates/autorecovery-service.yaml
AL ./charts/pulsar/templates/autorecovery-statefulset.yaml
AL ./charts/pulsar/templates/bookkeeper-cluster-initialize.yaml
AL ./charts/pulsar/templates/bookkeeper-configmap.yaml
AL ./charts/pulsar/templates/bookkeeper-pdb.yaml
AL ./charts/pulsar/templates/bookkeeper-podmonitor.yaml
AL ./charts/pulsar/templates/bookkeeper-rbac.yaml
AL ./charts/pulsar/templates/bookkeeper-service.yaml
AL ./charts/pulsar/templates/bookkeeper-statefulset.yaml
AL ./charts/pulsar/templates/bookkeeper-storageclass.yaml
AL ./charts/pulsar/templates/broker-cluster-role-binding.yaml
AL ./charts/pulsar/templates/broker-configmap.yaml
AL ./charts/pulsar/templates/broker-hpa.yaml
AL ./charts/pulsar/templates/broker-pdb.yaml
AL ./charts/pulsar/templates/broker-podmonitor.yaml
AL ./charts/pulsar/templates/broker-rbac.yaml
AL ./charts/pulsar/templates/broker-service-account.yaml
AL ./charts/pulsar/templates/broker-service.yaml
AL ./charts/pulsar/templates/broker-statefulset.yaml
AL ./charts/pulsar/templates/dashboard-deployment.yaml
AL ./charts/pulsar/templates/dashboard-ingress.yaml
AL ./charts/pulsar/templates/dashboard-service.yaml
AL ./charts/pulsar/templates/function-worker-configmap.yaml
AL ./charts/pulsar/templates/keytool.yaml
AL ./charts/pulsar/templates/namespace.yaml
AL ./charts/pulsar/templates/proxy-configmap.yaml
AL ./charts/pulsar/templates/proxy-hpa.yaml
AL ./charts/pulsar/templates/proxy-ingress.yaml
AL ./charts/pulsar/templates/proxy-pdb.yaml
AL ./charts/pulsar/templates/proxy-podmonitor.yaml
AL ./charts/pulsar/templates/proxy-rbac.yaml
AL ./charts/pulsar/templates/proxy-service.yaml
AL ./charts/pulsar/templates/proxy-statefulset.yaml
AL ./charts/pulsar/templates/pulsar-cluster-initialize.yaml
AL ./charts/pulsar/templates/pulsar-manager-admin-secret.yaml
AL ./charts/pulsar/templates/pulsar-manager-configmap.yaml
AL ./charts/pulsar/templates/pulsar-manager-deployment.yaml
AL ./charts/pulsar/templates/pulsar-manager-ingress.yaml
AL ./charts/pulsar/templates/pulsar-manager-service.yaml
AL ./charts/pulsar/templates/tls-cert-internal-issuer.yaml
AL ./charts/pulsar/templates/tls-certs-internal.yaml
AL ./charts/pulsar/templates/toolset-configmap.yaml
AL ./charts/pulsar/templates/toolset-rbac.yaml
AL ./charts/pulsar/templates/toolset-service.yaml
AL ./charts/pulsar/templates/toolset-statefulset.yaml
AL ./charts/pulsar/templates/zookeeper-configmap.yaml
AL ./charts/pulsar/templates/zookeeper-pdb.yaml
AL ./charts/pulsar/templates/zookeeper-podmonitor.yaml
AL ./charts/pulsar/templates/zookeeper-rbac.yaml
AL ./charts/pulsar/templates/zookeeper-service.yaml
AL ./charts/pulsar/templates/zookeeper-statefulset.yaml
AL ./charts/pulsar/templates/zookeeper-storageclass.yaml
AL ./examples/values-bookkeeper-aws.yaml
AL ./examples/values-cs.yaml
AL ./examples/values-jwt-asymmetric.yaml
AL ./examples/values-jwt-symmetric.yaml
AL ./examples/values-local-cluster.yaml
AL ./examples/values-local-pv.yaml
AL ./examples/values-minikube.yaml
AL ./examples/values-no-persistence.yaml
AL ./examples/values-one-node.yaml
AL ./examples/values-tls.yaml
AL ./examples/values-zookeeper-aws.yaml
AL ./hack/common.sh
AL ./hack/kind-cluster-build.sh
AL ./scripts/set-pulsar-version.sh
AL ./scripts/cert-manager/install-cert-manager.sh
AL ./scripts/pulsar/cleanup_helm_release.sh
AL ./scripts/pulsar/common.sh
AL ./scripts/pulsar/common_auth.sh
AL ./scripts/pulsar/generate_token.sh
AL ./scripts/pulsar/generate_token_secret_key.sh
AL ./scripts/pulsar/get_token.sh
AL ./scripts/pulsar/prepare_helm_release.sh
*****************************************************
```