Search lambda: add "freeform" action

[nl0]

Description

Add "freeform" search action which passes the "body" param to elastic as is.

TODO

• Unit tests
• Changelog entry

[nl0]

@sir-sigurd are these changes enough or am i missing smth?

[codecov]

Codecov Report

Merging #2087 (cba5762) into master (542514e) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2087      +/-   ##
==========================================
+ Coverage   46.11%   46.17%   +0.05%     
==========================================
  Files         410      410              
  Lines       19619    19636      +17     
  Branches     2284     2284              
==========================================
+ Hits         9048     9067      +19     
+ Misses       9581     9579       -2     
  Partials      990      990              

Flag	Coverage Δ
api-python	89.36% <ø> (ø)
catalog	15.86% <ø> (ø)
lambda	92.72% <100.00%> (+0.11%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
lambdas/search/index.py	88.65% <100.00%> (+2.63%)	⬆️
lambdas/search/tests/test_search.py	100.00% <100.00%> (ø)

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[fiskus]

Can you provide body example, please?

/search?index=_all&filter_path=hits&action=freeform&body={"query"%3A{"match"%3A{"message"%3A"instruments"}}} has 0 hits

[nl0]

Can you provide body example, please?

/search?index=_all&filter_path=hits&action=freeform&body={"query"%3A{"match"%3A{"message"%3A"instruments"}}} has 0 hits

try {"query": { "match_all": {} } }