Move bookkeeper metadata initialization to it's own job

[lhotari]

Currently
bookkeeper shell metaformat --nonInteractive is called every time a bookie is started:

pulsar-helm-chart/helm-chart-sources/pulsar/templates/bookkeeper/bookkeeper-statefulset.yaml

Lines 132 to 142 in 524d796

	# This initContainer will make sure that the bookkeeper
	# metadata is in zookeeper
	- name: pulsar-bookkeeper-metaformat
	image: "{{ .Values.image.bookkeeper.repository }}:{{ .Values.image.bookkeeper.tag }}"
	imagePullPolicy: {{ .Values.image.bookkeeper.pullPolicy }}
	command: ["sh", "-c"]
	args:
	- >
	bin/apply-config-from-env.py conf/bookkeeper.conf &&
	bin/apply-config-from-env.py conf/bkenv.sh &&
	bin/bookkeeper shell metaformat --nonInteractive || true;

bookkeeper shell metaformat command is deprecated since 4.7.0
https://bookkeeper.apache.org/docs/latest/reference/cli/#bookkeeper-shell-metaformat

This command is deprecated since 4.7.0, in favor of using initnewcluster for initializing a new cluster and nukeexistingcluster for nuking an existing cluster.

Consider moving the bookkeeper metadata initialization to it's own job