Add new endpoints for browser API tests in Synthetics

[api-clients-generation-pipeline]

See DataDog/datadog-api-spec#821

[codecov-io]

Codecov Report

Merging #230 (c237601) into master (ba3006f) will decrease coverage by 0.96%.
The diff coverage is 29.71%.

@@            Coverage Diff             @@
##           master     #230      +/-   ##
==========================================
- Coverage   35.87%   34.91%   -0.97%     
==========================================
  Files         826      832       +6     
  Lines       70801    72605    +1804     
==========================================
- Hits        25403    25353      -50     
- Misses      45398    47252    +1854     

Impacted Files	Coverage Δ
lib/datadog_api_client/v1/api/synthetics_api.rb	8.17% <7.14%> (-0.21%)	⬇️
...api_client/v1/models/synthetics_api_test_config.rb	27.61% <27.61%> (ø)
...client/v1/models/synthetics_browser_test_config.rb	27.61% <27.61%> (ø)
...og_api_client/v1/models/synthetics_browser_test.rb	36.80% <36.80%> (ø)
...atadog_api_client/v1/models/synthetics_api_test.rb	37.09% <37.09%> (ø)
...g_api_client/v1/models/synthetics_api_test_type.rb	63.63% <63.63%> (ø)
...i_client/v1/models/synthetics_browser_test_type.rb	63.63% <63.63%> (ø)
lib/datadog_api_client/v1.rb	99.81% <100.00%> (+<0.01%)	⬆️
...ib/datadog_api_client/v2/api/key_management_api.rb	8.69% <0.00%> (-63.59%)	⬇️
lib/datadog_api_client/v2/models/api_keys_type.rb	63.63% <0.00%> (-36.37%)	⬇️
... and 620 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ba3006f...c237601. Read the comment docs.

[jirikuncar]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).