PCOM-214 Add kernel headers to ubuntu-fips image

[sadath-12]

No description provided.

[nianyush]

@shubhamrajvanshi @sadath-12 I don't think this change is valid.
First, you need Ubuntu pro and fips repo enabled to install any fips kernel packages. So here you are just install kernel headers from non fips repo.
Second, kernel headers shouldn't be a default package to include. This is only needed for compiling or development need which is not a usual case. This would bloat image size a lot too.

I would suggest to add this package in the ubuntu fips base image itself instead of adding it here.

[sadath-12]

1 - The ubuntu pro authentication is still present and was able to pull headers from fips repo
2 - The flow follows the non-fips logic to install kernel headers always as its just around 25mb and would be convenient for users to switch from shipped_modules to compile in piraeus pack operations