OF-3252: Upgrade commons-dbcp2 from 2.9.0 to 2.14.0 and commons-pool2 from 2.9.0 to 2.13.1
This brings about 5 years of maintenance of the libraries that we use for object pooling. This is mostly related to database connections, but also to a few other pools.
As a side-effect of upgrading to replacement APIs for methods of those libraries used by Openfire that have been deprecated, all properties used by the SMPP implementation have been migrated from old JiveGlobals to new SystemProperties.