Fix mpi.conf templating

[bertiethorpe]

Bug slipped through CI because mpi.conf not populated in .stackhpc environment.

Fixed by correcting parentheses on the .items() method in mpi.conf.j2 template. dict.items without parentheses refers to the method itself, not the result of calling it, so Ansible is trying to iterate over a function object

[gemini-code-assist]

Summary of Changes

Hello @bertiethorpe, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request implements a minor but crucial syntax correction within the mpi.conf.j2 Jinja2 template. The change ensures that the configuration file is generated correctly by adhering to the proper method call for iterating over dictionary items, thereby enhancing the reliability of the templating process and avoiding potential errors during configuration deployment.

Highlights

• Jinja2 Templating Syntax Fix: Corrected the iteration syntax in the mpi.conf.j2 template from openhpc_mpi_config.items to openhpc_mpi_config.items() to ensure proper dictionary iteration in Jinja2, preventing potential rendering issues.

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[gemini-code-assist]

Code Review

This pull request correctly fixes a syntax error in the mpi.conf.j2 Jinja2 template. The change adds the required parentheses to the .items() method call, which is necessary to iterate over the openhpc_mpi_config dictionary. While the fix itself is correct, I've noticed that the current test suite does not seem to cover this templating logic, as openhpc_mpi_config is empty by default. To improve robustness and prevent future regressions, I recommend extending the molecule tests to include a scenario where openhpc_mpi_config is populated and then verify the contents of the generated mpi.conf file.

[wtripp180901]

LGTM