Add serverless-aware runners

[gbanasiak]

This PR passes configuration context to Query, DeleteIndex and DeleteComposableTemplate runners to make them serverless-aware and change their behaviour if Rally targets serverless cluster.

Changes:

• Query, DeleteIndex and DeleteComposableTemplate stop getting and setting cluster settings through set_destructive_requires_name() as cluster settings are not available to serverless users. In case of DeleteIndex this replaces the earlier crude workaround through contextlib.suppress introduced in Fix serverless public use in trivial tracks #1785.
• The DeleteComposableTemplate runner starts to ignore delete_matching_indices template option. Wildcard deletes are not available to serverless users (!). DeleteIndexTemplate runner is not fixed as legacy templates are not available in serverless.
• Request cache becomes turned on by default for serverless non-operator use in the Query runner (search, paginated-search, composite-agg and scroll-search operations). In non-serverless use we typically rely on "index.requests.cache.enable": false index setting for this purpose but it is not available to serverless users. As part of this change I've removed request params in /_search/scroll which is present in certain Query scenarios, as /_search/scroll does not accept request_cache parameter and it is the only parameter used.