tuned - add custom profile support, udev/io sched. example

roles/tuned/templates/custom_profile.conf.j2

@@ -0,0 +1,12 @@
+{{ ansible_managed | comment }}
+#
+# tuned '{{ tuned_custom_profile.name }}' configuration
+#
+
+{% for section in tuned_custom_profile.sections %}
+[{{ section.name }}]
+{% for item in section.params %}
+{{ item.option }}={{ item.value }}
+{% endfor %}
+
+{% endfor %}