Add filter by case citations in /legal/search/

[fec-jli]

Summary

In order to create the legal web search app, we need add filter by citations(statutory citation and (regulatory_citation) in MUR's search. This PR will add general filter by case_citations which used for 3 case types: murs, admin_fines and adrs(not release yet)

• Endpoint url: /legal/search/?type=murs&case_statutory_citation=xxxxx&case_regulatory_citation=yyyyy
• Three Parameters:
  case_statutory_citation,
  case_regulatory_citation,
  case_citation_require_all

• Resolves MURs: Prototype using Elasticsearch DSL to filter by citations #5111
• Ref design ticket Sub-epic: MUR search fec-epics#221
• Ref research ticket Research elasticsearch DSL #5107
• All parameters information: https://docs.google.com/spreadsheets/d/1l3YKu-oBzOwBHH986YdyiYaSJTFdJBNxitZkt_Ew4zA/edit#gid=1161233667
• Ref AO search citations page: https://www.fec.gov/data/legal/search/advisory-opinions/?type=advisory_opinions&ao_category=F&ao_statutory_citation=3352+U.S.C.+%C2%A730104

Completion criteria

• Create filter by case_citations
• Recreate ES index("docs") and reload whole data
• Create follow-up ticket to reload ES data on stage and prod spaces
• Sync with team

Required reviewers

2 developers

Impacted areas of the application

legal search

How to test

(It is better test locally first)

• Follow wiki install ES7.4 locally and start it. https://github.com/fecgov/openFEC/wiki/Elasticsearch-7.x.0-setup-and-test-locally
• Check branch
• Create index "docs"
  python manage.py create_index
• Upload 8 sample murs in local ES

python manage.py load_current_murs -s 7958
python manage.py load_current_murs -s 7949
python manage.py load_current_murs -s 7927
python manage.py load_current_murs -s 7926
python manage.py load_current_murs -s 7923
python manage.py load_current_murs -s 7212
python manage.py load_current_murs -s 4633 
python manage.py load_current_murs -s 3987

• Make sure /legal/search/ endpoint works well
• Test filter
  Ref test urls list: https://docs.google.com/spreadsheets/d/1l3YKu-oBzOwBHH986YdyiYaSJTFdJBNxitZkt_Ew4zA/edit#gid=1143741195
• Some sample urls
  http://127.0.0.1:5000/v1/legal/search/?type=murs&case_statutory_citation=52 U.S.C. §30116&case_statutory_citation=52 U.S.C. §30122&case_regulatory_citation=11 CFR §110.4

http://127.0.0.1:5000/v1/legal/search/?type=murs&case_statutory_citation=52 U.S.C. §30116&case_statutory_citation=52 U.S.C. §30122&case_regulatory_citation=11 CFR §110.4&case_citation_require_all=True

http://127.0.0.1:5000/v1/legal/search/?type=murs&case_statutory_citation=52 U.S.C. §30104&case_regulatory_citation=11 CFR §116.10&case_citation_require_all=True

[fec-jli]

AO data vs. MUR data:

ex: https://fec-dev-api.app.cloud.gov/v1/legal/docs/advisory_opinions/2021-08

ex: https://fec-dev-api.app.cloud.gov/v1/legal/docs/murs/7958

[pkfec]

Tested new filters on my local and also on dev space. New filters work as expected.
Awesome work @fec-jli.

[cnlucas]

Works as expected, thank you so much for pairing with me on review.