Fix left over issues with managed fluentbit

[rakesh-garimella]

Description

Changes proposed in this pull request:

• Pass the images for fluentbit via cli
• Pass the priority class via cli
• Pass the fluentbit resource req/limits via cli
• Fix the issue when 1 of 2 pipelines are deleted is not causing restart of the fluent bit daemon set
• Remove extra 2021 port on the fluent bit
• Fix the lua script

Related issue(s)

#16570

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[kyma-bot]

@rakesh-garimella: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pre-main-kyma-gardener-azure-alpha-eval	47928d1	link	false	/test pre-main-kyma-gardener-azure-alpha-eval

Full PR test history. Your PR dashboard.

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[a-thaler]

I tested the mentioned points manually and all worked fine