tests (e2e/cli/cache_search): make the test more resilient: the caching is triggered by `li.blog.get`, but it is done in parallel without blocking the command, thus there is a possibility that the data is not yet in cache when the following test is done. A loop with delay is done, to be sure that cache is filled before doing the assertion.

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*.pyv
*.swp
*.swo
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twistd.log
twistd.pid
bridge_constructor/generated
tests/e2e/report*
_trial_temp/
sat.egg-info
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ctags_links/
Session.vim
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.pytest_cache