DRILL-7639: Replace DBCP2 with HikariCP in RDBMS (JDBC) plugin #2027
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DRILL-7639: Replace DBCP2 with HikariCP in RDBMS (JDBC) plugin
Description
This PR replace DBCP2 with HikariCP in RDBMS (JDBC) plugin since HikariCP is much faster and more reliable.
https://beansroasted.wordpress.com/2017/07/29/connection-pool-analysis/
https://github.com/brettwooldridge/HikariCP
Documentation
NA
Testing
Added unit tests, ran all tests, tested manually.