Fix RedHat entry in apache_config_path

With CentOS 7, ansible is expecting to have RedHat as an attribute for
the dict so Discover configurations task fails with an undefined
variable error.

Closes-Bug: #1750573
Change-Id: I5bf9c4057ca9f75d730add9e429d0ef050c6d900

Author: danielmellado

roles/apache-logs-conf/tasks/main.yaml

@@ -57,7 +57,7 @@
     apache_config_paths:
       'Debian': '/etc/apache2/sites-enabled/'
       'Suse': '/etc/apache2/conf.d/'
-      'Redhat': '/etc/httpd/conf.d/'
+      'RedHat': '/etc/httpd/conf.d/'
 
 - name: Discover configurations
   find: