Tuned

This implements an RFE to add tuned virtual-host profile to compute nodes.  This can be later extended to other profiles and added in other locations as  needed.

To test:

* Apply a compute node of any type
* When applying, you should see output similar to:
```
Info: /Stage[main]/Quickstack::Tuned::Common/Service[tuned]: Scheduling refresh of Exec[tuned-virtual-host]
Info: /Stage[main]/Quickstack::Tuned::Common/Service[tuned]: Unscheduling refresh on Service[tuned]
Notice: /Stage[main]/Quickstack::Tuned::Virtual_host/Exec[tuned-virtual-host]/returns: executed successfully
Notice: /Stage[main]/Quickstack::Tuned::Virtual_host/Exec[tuned-virtual-host]: Triggered 'refresh' from 1 events
```
* Look to see if tuned service is installed:
```
service tuned status
tuned (pid  2882) is running…
```
* See if the expected profile is running:
```
# /usr/sbin/tuned-adm active | /bin/grep virtual-host
Current active profile: virtual-host
```