/etc/phpPgAdmin configs are included in RPM, marked as config but can't be used without breaking the RPM verification.
Note that EPEL versions for RHEL 6 and 7 are fine.
[root@dev-auspace-01 ~]# rpm -qfi /usr/share/phpPgAdmin/conf/
Name : phpPgAdmin Relocations: (not relocatable)
Version : 5.1 Vendor: (none)
Release : 1.rhel6 Build Date: Sun 03 Jan 2016 04:59:46 PM MST
Install Date: Wed 02 Aug 2017 04:12:53 PM MDT Build Host: koji-sl6-x86-64-pg95
Group : Applications/Databases Source RPM: phpPgAdmin-5.1-1.rhel6.src.rpm
Size : 3121804 License: GPLv3+
Signature : DSA/SHA1, Sun 03 Jan 2016 04:59:47 PM MST, Key ID 1f16d2e1442df0f8
URL : http://phppgadmin.sourceforge.net/
Summary : Web-based PostgreSQL administration
Description :
phpPgAdmin is a fully functional web-based administration utility for
a PostgreSQL database server. It handles all the basic functionality
as well as some advanced features such as triggers, views and
functions (stored procedures). It also has Slony-I support.
[root@dev-auspace-01 ~]# rpm -qf --dump /usr/share/phpPgAdmin/conf/ | fgrep phpPgAdmin/conf
/etc/phpPgAdmin/config.inc.php 5872 1451865585 3055b20b206eeeb8c1a245e95a460ca07f8b25c145c46189be87266e440ec333 0100644 root root 1 0 0 X
/etc/phpPgAdmin/config.inc.php-dist 5872 1451865585 3055b20b206eeeb8c1a245e95a460ca07f8b25c145c46189be87266e440ec333 0100644 root root 1 0 0 X
/usr/share/phpPgAdmin/conf 4096 1366059357 0000000000000000000000000000000000000000000000000000000000000000 040755 root root 0 0 0 X
/usr/share/phpPgAdmin/conf/config.inc.php 5872 1366059357 3055b20b206eeeb8c1a245e95a460ca07f8b25c145c46189be87266e440ec333 0100644 root root 0 0 0 X
/usr/share/phpPgAdmin/conf/config.inc.php-dist 5872 1365980398 3055b20b206eeeb8c1a245e95a460ca07f8b25c145c46189be87266e440ec333 0100644 root root 0 0 0 X