sysctl: Add 'apply' parameter, use sysctl command
sysctl: Let munge do the validation for apply
Use sysctl -n
systctl: Use :boolean => true instead of manually munging values
sysctl_set is a class method
Mock sysctl for modification test
sysctl_set is called before sysctl_get on create
sysctl: check system value cases when updating
sysctl: test actual sysctl call for comments
Adapt specs to test cases when applying system values
Return # not in sync # with an extra space
No trailing commas in 1.8
Expect sysctl commands when no file is present