Apply only very conservative database connection reduction changes

[AlanCoding]

SUMMARY

Replaces #14034 but avoids closing connections for clients that will periodically re-open them (with I guess the exception of the callback receiver main process, but if we have pushback we should delete the log because it is pointless).

ISSUE TYPE

• Bug, Docs Fix or other nominal change

COMPONENT NAME

• API

[AlanCoding]

Updated connections for an idle system after this change.

 pid |         application_name          | state  
-----+-----------------------------------+--------
  31 |                                   | 
  33 |                                   | 
  42 | awx-145-ws_heartbeat-awx_1        | idle
  44 |                                   | idle
  45 | awx-137-dispatcher_listener-awx_1 | idle
 321 | awx-379-dispatcher_worker-awx_1   | idle
  47 | awx-147-rsyslog_configurer-awx_1  | idle
  48 | awx-150-cache_clear-awx_1         | idle
 326 | psql                              | active
 324 | awx-381-dispatcher_worker-awx_1   | idle
 323 | awx-385-dispatcher_worker-awx_1   | idle
 319 | awx-375-dispatcher_worker-awx_1   | idle
  29 |                                   | 
  28 |                                   | 
  30 |                                   | 
(15 rows)

Findings is that it had 12 connections before this change and this has 8 connections now.