Wipe Disks Improvements (backport #885)

[mergify]

Problem:

We introduced a field in Harvester config named wipeDisks which when set ran a script in the installer to iterate over all disk devices visible to the host and wipe them.

This ended up being too aggressive, not to mention not all disks may contain old Harvester installations.

Solution:

PR introduces two new fields in the harvester config wipeDisksList and wipeAllDisks and drops the old wipeDisks introduced in v1.3

There is an extra panel in disk configuration page. The extra panel contains a drop down menu which gets rendered and populated if installer finds additional disks with existing elemental based installations which are not already used in install device or additional data device.

The extra Wipe Disks panels will only be available when there are additional disks visible to the host which have a partition with COS_OEM label and such disk is not already being used in Install Device or Install Data Device.

User can also pass these fields via ipxe using the following two new fields

install:
  wipeAllDisks: true

or

install:
  wipeDisksList: 
     - device1
     - device2

wipeAllDisks uses the same logic as the installers Wipe Disks Panel where it will identify additional disks with COS_OEM partition which are not already being used as Install Device or Install Data Device.

Related Issue:
harvester/harvester#6304
harvester/harvester#6533

Test plan:

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This is an automatic backport of pull request #885 done by [Mergify](https://mergify.com).