Description of problem:
When a KubeVirt cluster is run with this ConfigMap setting `selinuxLauncherType: spc_t`, two functional tests fail.

------------------------------                                                                                                                                                                                                               
• Failure [15.608 seconds]                                                                                                                                                                                                                   
Operator                                                                                                                                                                                                                                     
/root/go/src/kubevirt.io/kubevirt/tests/operator_test.go:56 
  With selinuxLauncherType defined                                                                                    
  /root/go/src/kubevirt.io/kubevirt/tests/operator_test.go:1442                     
    Should honor custom SELinux type for virt-launcher [It]                                                           
    /root/go/src/kubevirt.io/kubevirt/tests/operator_test.go:1443                    

    Expected
        <string>: spc_t
    not to equal
        <string>: spc_t                                                                                               
                                                                                                                      
    /root/go/src/kubevirt.io/kubevirt/tests/operator_test.go:1464
------------------------------
• Failure [7.049 seconds]
SecurityFeatures
/root/go/src/kubevirt.io/kubevirt/tests/security_features_test.go:32
  Check virt-launcher securityContext
  /root/go/src/kubevirt.io/kubevirt/tests/security_features_test.go:38
    [test_id:2953]Ensure virt-launcher pod securityContext type is virt_launcher.process [It]
    /root/go/src/kubevirt.io/kubevirt/tests/security_features_test.go:47

    Expected
        <string>: spc_t
    to equal
        <string>: virt_launcher.process

    /root/go/src/kubevirt.io/kubevirt/tests/security_features_test.go:56
------------------------------

Both of these failures are directly linked to the fact that the tests assume that selinuxLauncherType is not set before each test starts.

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. kubectl -n kubevirt edit cm kubevirt-config
2. add "selinuxLauncherType: spc_t" under "data"
3. make functest

Actual results:
Both of the above tests fail

Expected results:
All tests should pass

Additional info:
This change was introduced very recently upstream so requires the latest kubevirt code on master to replicate.