NXCM-5067: Setting LDAP connection stuff in JVM props
NXCM-5067: Removing dead code and adding traces and comments

Removed the irrelevant bits from the code that were thought
to do something but actually did not do anything.

Same for UT, relevant test removed as putting these
into env has no effect, and JVM system properties are
externally controlled, mostly by users.
Merge remote-tracking branch 'origin/master' into nxcm-5067-ldaps-connection-pooling
Merge remote-tracking branch 'origin/master' into nxcm-5067-ldaps-connection-pooling
NXCM-5067: Cleanup of the system proper vs env mixup

In code we now use the only one env property to
enable pooling for given context, as it turns out
this part was already correct.

The wrong use of system property (was used as env var and
had no effect) is removed, and wrapper.conf got it added.
Merge pull request #845 from sonatype/nxcm-5067-ldaps-connection-pooling

[REVIEW] NXCM-5067: Setting LDAP connection stuff in JVM props