Merge tag 's390x-2020-01-09' of https://gitlab.com/frankja/kvm-unit-tests

* Added first Ultravisor tests
* Added SKRF key in PSW test
* Added custom program exception cleanup hook

s390x: Ultravisor guest API test

Test the error conditions of guest 2 Ultravisor calls, namely:
* Query Ultravisor information
* Set shared access
* Remove shared access

Signed-off-b

s390x: Ultravisor guest API test

Test the error conditions of guest 2 Ultravisor calls, namely:
* Query Ultravisor information
* Set shared access
* Remove shared access

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200810154541.32974-1-frankja@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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