* Add upgrade test to CI
- install latest released chart version and then upgrade to the local chart version
* Add metallb for loadbalancer support so that "--wait" will work
* Improve script logging
* produce messages with old version of pulsar and consume with new version
* Add 10 second delay
* Remove duplication
* Improve logging
* Fix quotes
* Before trying produce-consume test, verify that the Admin API is available
* Add 2 more upgrade scenarios: TLS & PSP
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