[Filebeat] apache2 log directory not match?

[DanielTimLee]

Describe the enhancement:

At Fedora, apache2 (as a httpd) package can be installed by httpd-2.4.39-2.fc29.x86_64
At RHEL 7, httpd can be installed with httpd-2.4.6-88.el7.x86_64

And on these OSes, httpd access/error logs are found in directory:

/var/log/httpd/access_log
/var/log/httpd/error_log

The log files are located httpd instead of apache2
And also, log file names are in *_log not in .log

beats/filebeat/module/apache/access/manifest.yml

Lines 3 to 12 in 8caa332

	var:
	- name: paths
	default:
	- /var/log/apache2/access.log*
	- /var/log/apache2/other_vhosts_access.log*
	os.darwin:
	- /usr/local/var/log/apache2/access_log*
	os.windows:
	- "C:/tools/Apache/httpd-2.*/Apache24/logs/access.log*"
	- "C:/Program Files/Apache Software Foundation/Apache2.*/logs/access.log*"

As the upper filebeat/module/apache/access/manifest.yml manifest file only
defines the location of
var/log/apache2/access.log

Since these httpd packages save logs at as /var/log/httpd/*_log a default (at RH type OS),
adding this directory to the manifest file will help filebeat apache module to run out of the box on these environments.

Describe a specific use case for the enhancement or feature:

Enhance will help filebeat apache to run out of the box.

[kaiyan-sheng]

Closing this issue since the fix #11888 is merged.