Description of problem:
- httpd file descriptors for listening ports when reloading configuration twice is increasing 
- when httpd service reloading the same conf file with the listen directive, the httpd service should error out 

Version-Release number of selected component (if applicable):

# rpm -qa |grep httpd 
httpd24-apr-1.5.1-1.el6.x86_64
httpd24-httpd-2.4.18-11.el6.x86_64
httpd24-runtime-1.1-14.el6.x86_64
httpd24-apr-util-1.5.4-1.el6.x86_64
httpd24-libnghttp2-1.7.1-1.el6.x86_64
httpd24-httpd-tools-2.4.18-11.el6.x86_64


How reproducible:

1) Install httpd24-httpd package 
2) Create a ports.conf 

# cat  /opt/rh/httpd24/root/etc/httpd/conf.d/ports.conf 
Listen 127.0.0.1:82
Listen [::1]:82

3) Modify the "/opt/rh/httpd24/root/etc/httpd/conf/httpd.conf" to have the following Include directive:

#tail -n 3  /opt/rh/httpd24/root/etc/httpd/conf/httpd.conf

Include "/opt/rh/httpd24/root/etc/httpd/conf.d/ports.conf"

4) Start the httpd24-httpd service  <-------In RHEL httpd prevent the httpd from starting  

5) Run lsof command > reload the httpd24-httpd service > lsof command again 

# lsof |grep httpd| grep LISTEN |wc -l 
42

# service httpd24-httpd reload

# lsof |grep httpd| grep LISTEN |wc -l 
54

Additional info:

When reproducing this in RHEL 6 httpd start/reload up will fail see the following:

# service httpd start
Starting httpd: (98)Address already in use: make_sock: could not bind to address 127.0.0.1:82
no listening sockets available, shutting down
Unable to open logs