Misc cleanups to example pipelines

[dagardner-nv]

Description

• Ensure each example pipeline produces a unique output file name
• Add expected example output filenames to .gitignore
• Update ransomware_detection pipeline to include a unique column
• Update ransomware_detection adding a --pipeline_batch_size flag defaulting to the model_max_batch_size avoiding a config warning
• Update Config to call _validate_config from Config.freeze instead of the attribute setters, avoids issue where setting attributes becomes order dependent ex:

from morpheus.config import Config
config = Config()
config.model_max_batch_size = 1024 # This line triggers a warning
config.pipeline_batch_size = 1024

Includes changes from PR #2040

Closes #2033
Closes #2035

By Submitting this PR I confirm:

• I am familiar with the Contributing Guidelines.
• When the PR is ready for review, new or existing tests cover these changes.
• When the PR is ready for review, the documentation is up to date with these changes.

[dagardner-nv]

/merge