Glue datasource support

[vamsi-amazon]

Description

• Adding Basic Requirements for Glue datasource type.
• Will change properties again during end to end integration.
• Since Glue queries are dependent on jobs apis, we are not creating a separate module. For now keeping glue classes inside datasources module itself.
• Documentation link: https://github.com/vamsi-amazon/sql/blob/datasource-glue-support/docs/user/ppl/admin/connectors/s3glue_connector.rst [Will update this document on the go according to the changes made in subsequent PRs]

Testing:

curl --location 'http://localhost:9200/_plugins/_query/_datasources' \
--header 'Content-Type: application/json' \
--data '{
    "name" : "my_glue",
    "connector" : "glue",
    "properties" : {
           "glue.auth.type": "iam_role",
    "glue.auth.account_id": "access_key",
    "glue.auth.role_arn": "role_arn",
    "glue.auth.region": "region",    
    "emr.datasource.flint.uri": "http://localhost:9200",
    "emr.datasource.flint.auth" :"false",
    "emr.datasource.flint.region": "us-west-2"
    }
}'

Response:

Created DataSource with name my_glue

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

Merging #2055 (ff52688) into feature/job-apis (61d1eb7) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@                 Coverage Diff                 @@
##             feature/job-apis    #2055   +/-   ##
===================================================
  Coverage               97.27%   97.27%           
- Complexity               4623     4627    +4     
===================================================
  Files                     410      411    +1     
  Lines                   11947    11961   +14     
  Branches                  828      828           
===================================================
+ Hits                    11621    11635   +14     
  Misses                    317      317           
  Partials                    9        9           

Flag	Coverage Δ
sql-engine	97.27% <100.00%> (+<0.01%)	⬆️

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

Files Changed	Coverage Δ
...ch/sql/datasources/glue/GlueDataSourceFactory.java	100.00% <100.00%> (ø)
...l/datasources/utils/DatasourceValidationUtils.java	93.33% <100.00%> (ø)