Add eatmem_free_memory to argument list

[malucius-rh]

Description

This enables the --eatmem_free_memory option, which was implemented in the original drop but never added to ARGUMENT_LIST

Before/After Comparison

Before: trying to use --eatmem_free_memory would result in a failed run because the option wasn't considered legitmate
After: the option passes validation and affects the run

Clerical Stuff

This closes #65
Relates to JIRA: RPOPC-1044
Artifacts:
PCP traces of mem.util.avail using default value
availmem_default.txt
PCP traces of mem.util.avail using --eatmem_free_memory 300000
availmem_efm300G.txt

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: e7071f29-7b2e-4fd5-895f-f4fe56fcecd5

📥 Commits

Reviewing files that changed from the base of the PR and between b1b40a0 and 7e5abb0.

📒 Files selected for processing (1)

• iozone/iozone_run.sh

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📝 Walkthrough

Summary by CodeRabbit

• New Features
  • Added support for configuring the eatmem_free_memory option when running the benchmark script.

Walkthrough

The change adds eatmem_free_memory to the accepted getopt arguments in iozone_run.sh, so the flag is parsed instead of ignored.

Changes

iozone option parsing

Layer / File(s)	Summary
Register eatmem_free_memory iozone/iozone_run.sh	The getopt argument list now accepts eatmem_free_memory with a value.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: dvalinrh

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: adding eatmem_free_memory to the argument list.
Description check	✅ Passed	The description includes the required summary, before/after behavior, issue closure, JIRA reference, and supporting artifacts.
Linked Issues check	✅ Passed	The change adds eatmem_free_memory to ARGUMENT_LIST, addressing issue #65 and enabling the specified value to be used.
Out of Scope Changes check	✅ Passed	The one-line change is directly related to the linked issue and stated pull request objective.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

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