Create new type grubby::kernel_opt

[traylenator]

A new type is added

grubby::kernel_opt{'foo':
  ensure => present,
  value  => 'bar',
  scope  => 'ALL',
}

The previous hash parameter grubby::kernel_opts is still valid
and now uses grubby::kernel_opt internally.

Motivation here is to increase flexibility of module allowing
kernel parameters to be added by other distinct modules.

[traylenator]

And the fact that = is a word end makes the spaced value a lot easier I would hope.

[atsonkov]

This one is still marked as draft, but looks ready to merge, right?

[traylenator]

Did some real world tests as I had not for the last few commits.

grubby::kernel_opt{'foobar':}

grubby::kernel_opt{'foot':
   value =>  'ball',
}

grubby::kernel_opt{'start':
   value => 'to',
}                             

resulted in:

args="ro console=ttyS0,115200 console=tty0 rd.auto net.ifnames=0 crashkernel=auto rhgb quiet consoleblank=0 $tuned_params sausage=dog alpha=beta gamma two two" foobar foot=ball start=to"

Following this

grubby::kernel_opt{'foobar':
  ensure => 'absent',
}

grubby::kernel_opt{'foot':
  ensure => 'absent',
   value =>  'ball',
}

grubby::kernel_opt{'start':
   value => 'from',
}

So delete two and change one , resulted in

args="ro console=ttyS0,115200 console=tty0 rd.auto net.ifnames=0 crashkernel=auto rhgb quiet consoleblank=0 $tuned_params sausage=dog alpha=beta gamma two two" start=from"

So all good. 👍