[#76422752] Add the ability to ensure supported kernel

Ubuntu has [deprecated](https://wiki.ubuntu.com/1204_HWE_EOL) all hardware enablement (HWE) kernels which are basically the kernels for newer releases backported to this release. They are named with suffixes of _lts-quantal_, _lts-raring_, _lts_saucy_ and those kernels are only supported until 14.04.1 is released (Aug 8, 2014)

As we are using the original kernel series supplied with 12.04 and that is still supported until April 2017, we don't need to do anything, and this PR is actually a NOOP. However this PR ensures that if `hwe-support-status` changes in future, our kernel will be updated and serves as a model for other environments where we _do_ need to make this change.

```
ssharpe@ci-master-1:~$ hwe-support-status --verbose
You are not running a system with a Hardware Enablement Stack. Your
system is supported until April 2017.
```

If we did upgrade to _lts-trusty_ packages, then we would still be supported until April 2017 (as that is the EOS for Ubuntu 12.04 Precise)
I don't feel strongly regarding CI versus the main stack but I think our lives might be simpler if we're using the same kernel everywhere.

I would go with whatever the new standardised VM template will use. In other words, if the new standard template that we build installs one of the newer HWE kernels, I think we should use the newer kernels everywhere.