Fixes #594 store unique pool number as a String in the global system properties.
Fixes #594 store unique pool number as a String in the global system properties.

brettwooldridge/HikariCP,udayshnk/HikariCP,ams2990/HikariCP,polpot78/HikariCP,nitincchauhan/HikariCP,brettwooldridge/HikariCP