…ine (elastic#192632)

## Summary

Closes elastic#192233

Just in time for Thanksgiving - a full buffet of FIPS testing fixes

Usage of non-compliant algorithms manifest as runtime errors, so it is
imperative that we attempt to run all tests possible with Kibana in FIPS
mode. However, several overrides are needed to run Kibana in FIPS mode,
resulting in setup that make it impossible to run.

## In this PR

- Enable Unit tests for FIPS pipeline
- Enable Integration Tests for FIPS pipeline
- Enable Full FTR suite for FIPS pipeline (smoke test had originally run
a subset)
- Skip tests that break with overrides
- Fix/change tests to work in FIPS mode to maximize coverage
- Examine necessity of MD5 when installing from source (TBD based Ops PR
feed back, see self review below)
- Remove md5 from es_file_client options

## Latest Successful FIPS Test Run

https://buildkite.com/elastic/kibana-fips/builds/268

---------

Co-authored-by: Brad White <Ikuni17@users.noreply.github.com>
Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Co-authored-by: Larry Gregory <larry.gregory@elastic.co>
(cherry picked from commit ac0b0b4)

# Conflicts:
#	packages/kbn-es/src/install/install_source.ts
#	src/core/server/integration_tests/config/check_dynamic_config.test.ts
#	src/core/server/integration_tests/core_app/default_route_provider_config.test.ts