### Motivation
When using standard bookkeeper installation on PSP cluster initialization fails because has to be started as root
### Modifications
Add same ServiceAccount and SecurityContext for bookkeeper-cluster-initialize as in bookkeeper specyfication.
UPDATE: Seems that when using in cluster TLS encryption other components also require RW access to root FS, I added PSP for proxy, zookeepe, broker and toolset
### Verifying this change
- [x] Make sure that the change passes the CI checks.
