Deprecation of `maxWorkers` param

[chandrashekar-s]

Description of what I changed

Fixes #948

Deprecated the maxWorkers param which was used to set the maxParallelism param in FlinkPipelineOptions. This param only gets used in a Streaming environment, since the pipelines doesn't use any streaming currently this parameter is not used and hence deprecated.

This PR also contains changes which were missed in the PR #935.

E2E test

Relined on e2e. Also, locally verified the Parquet Row Group Sizes for the newly created files.

TESTED:

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[chandrashekar-s]

@bashir2 This PR contains changes to deprecate the maxWorkers config parameters and also the few changes which were missed for the PR #935.

[bashir2]

I am going to merge this as there are other dependabot PRs that I want to merge (but I don't want us to wait for another e2e run of this, so I merge this first).

[chandrashekar-s]

I am going to merge this as there are other dependabot PRs that I want to merge (but I don't want us to wait for another e2e run of this, so I merge this first).

Thanks @bashir2