HIVE-29308: Exception when JDBC table names are case-sensitive

[soumyakanti3578]

What changes were proposed in this pull request?

1. In GenericJdbcDatabaseAccessor.getQualifiedTableName() quote schema and table names, as the qualified name is used to run queries against different DBs.
2. In CalcitePlanner.genTableLogicalPlan() remove the double quotes (unescape identifier) from Constants.JDBC_SCHEMA and Constants.JDBC_TABLE
3. In JdbcStorageHandler.getURIForAuth() unescape Constants.JDBC_TABLE, as otherwise we generate the jdbc string with "
4. Store quoting characters for different databases in DatabaseType
5. Helper methods to unescape identifiers
6. Tests for different DBs with case sensitive schemas and tables.

Why are the changes needed?

We see Exceptions, as shown here:
https://issues.apache.org/jira/browse/HIVE-29308

Does this PR introduce any user-facing change?

No

How was this patch tested?

mvn test -pl itests/qtest -Pitests -Dtest=TestMiniLlapLocalCliDriver -Dtest.output.overwrite=true -Dqfile="jdbc_case_sensitive_postgres.q,jdbc_case_sensitive_mssql.q,jdbc_case_sensitive_mariadb.q,jdbc_case_sensitive_oracle.q"

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud