Add option for setting CPU governor

Allows the administrator to set a CPU frequency governor if they need
to, though the default of ondemand is usually sufficient.

roles/base/templates/etc/default/cpufrequtils.j2

@@ -0,0 +1,3 @@
+# CPU Frequency Utils configuration
+# {{ ansible_managed }}
+GOVERNOR="{{ cpu_governor }}"

roles/base/templates/etc/default/locale.j2

@@ -1,3 +1,5 @@
+# Locales configuration
+# {{ ansible_managed }}
 LANGUAGE=en_CA.UTF-8
 LC_ALL=en_CA.UTF-8
 LANG=en_CA.UTF-8