adding index module code examples

[anniegale9538]

Hi! I found additional docs that do not have the Python code examples.

Index Modules:

• Index-level shard allocation filtering
• Delaying allocation when a node leaves
• Index recovery prioritization
• Index-level data tier allocation filtering
• Index blocks
• Similarity module
• Slow Log
• Store
• Preloading data into the file system cache ** part of the Store ascii doc
• Index Sorting
• Indexing pressure

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[pquentin]

Thanks! That's great. Sorry for the delay, I was on PTO.

[pquentin]

Please add a trailing comma here to fix the lint error here

[anniegale9538]

I hope you had the best time off! I have been careful to only add the examples I have investigated, but noticed a number for pre-existing files that look to be making some changes to their examples, I was going to see if I pushed a draft if we could review them and confirm that they should be added, but wanted to get a feel for it this is over stepping.

[pquentin]

Hey Annie, thanks for the careful consideration here. This is not over stepping, but maybe unnecessary work as we update existing examples just before releases anyway.

[pquentin]

What would be nice however would be to modify utils/generate-examples.py to exclude empty examples.

[pquentin]

Thanks for iterating! LGTM.