Remove templates to unsupported operating systems

All templates for Gentoo, SUSE are removed. An old pre-systemd
template for debian/ubuntu is removed. And memcached.conf template
for redhat is renamed for consistency.

Change-Id: I1ac948e0244a5eb1036049bba970cfaf8cba3f8e

templates/memcached.debian.j2

@@ -1,6 +0,0 @@
-# {{ ansible_managed }}
-# Any other value will disable memcached.
-ENABLE_MEMCACHED=yes
-
-ulimit -Hn {{ memcached_connections }}
-ulimit -n {{ memcached_connections }}

templates/memcached.gentoo.j2

@@ -1,17 +0,0 @@
-# {{ ansible_managed }}
-{% if debug | bool %}
-  {% set _verbosity = '-vv' %}
-{% else %}
-  {% set _verbosity = '-v' %}
-{% endif %}
-
-MEMCACHED_BINARY="/usr/bin/memcached"
-PIDBASE="/var/run/memcached/memcached"
-MEMUSAGE="{{ memcached_memory }}"
-MEMCACHED_RUNAS="{{ memcached_user }}"
-MAXCONN="{{ memcached_connections }}"
-LISTENON="{{ memcached_listen }}"
-PORT="{{ memcached_port }}"
-UDPPORT="${PORT}"
-MISC_OPTS="-t {{ memcached_threads }} {{ _verbosity }}"
-

templates/memcached.suse.j2

@@ -1,29 +0,0 @@
-# {{ ansible_managed }}
-
-{% if debug | bool %}
-  {% set _verbosity = '-vv' %}
-{% else %}
-  {% set _verbosity = '-v' %}
-{% endif %}
-
-MEMCACHED_PARAMS="-U 0 -l {{ memcached_listen }} -p {{ memcached_port }} -c {{ memcached_connections }} -t {{ memcached_threads }} {{ _verbosity }}"
-
-## Path:        Network/WWW/Memcached
-## Description: username memcached should run as
-## Type:        string
-## Default:     "memcached"
-## Config:      memcached
-#
-# username memcached should run as
-#
-MEMCACHED_USER="{{ memcached_user }}"
-
-## Path:        Network/WWW/Memcached
-## Description: group memcached should be run as
-## Type:        string
-## Default:     "memcached"
-## Config:      memcached
-#
-# group memcached should be run as
-#
-MEMCACHED_GROUP="memcached"

vars/redhat.yml

@@ -19,6 +19,6 @@ memcached_distro_packages:
   - memcached
   - nc
 
-memcached_conf_template: memcached.redhat.j2
+memcached_conf_template: memcached.conf.redhat.j2
 
 memcached_conf_dest: /etc/sysconfig/memcached