hypervisor: add ability to unpack hypervisor specialization package

[MofX]

Changes

This allows automatic download and unpacking of a debian package with
the hypervisor specialization without any external tooling

Tests results

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Robot Tests                                                                   
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Robot Tests.Boot                                                              
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Kernel exists                                                         | PASS |
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Config is OK                                                          | PASS |
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Script was executed                                                   | PASS |
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Robot Tests.Boot                                                      | PASS |
3 tests, 3 passed, 0 failed
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Robot Tests.Initrd                                                            
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Root Device is Mounted                                                | PASS |
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Devices are Created                                                   | PASS |
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Rootfs should be set up                                               | PASS |
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File dummy.txt should be OK                                           | PASS |
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File other.txt should be OK                                           | PASS |
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Modules are installed                                                 | PASS |
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Check modules loaded by init                                          | PASS |
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Robot Tests.Initrd                                                    | PASS |
7 tests, 7 passed, 0 failed
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Robot Tests.Root                                                              
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Systemd should exist                                                  | PASS |
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Fakeoot config executed                                               | PASS |
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Fakechroot config was executed                                        | PASS |
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Chroot config was executed                                            | PASS |
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Robot Tests.Root                                                      | PASS |
4 tests, 4 passed, 0 failed
==============================================================================
Robot Tests                                                           | PASS |
14 tests, 14 passed, 0 failed
==============================================================================

Developer Checklist:

• Test: Changes are tested
• Git: Informative git commit message(s)

Reviewer checklist:

• Review: Changes are reviewed
• Review: Tested by the reviewer

[simone-weiss]

Ok, but we should also update the docs under https://elektrobit.github.io/ebcl_template/tools/hypervisor.html as the specialization is mentioned there.

[MofX]

Thanks for the review

Ok, but we should also update the docs under https://elektrobit.github.io/ebcl_template/tools/hypervisor.html as the specialization is mentioned there.

Dokumentation of the whole tool is the next "big thing" planned. In the current state it is barely usable at all.