meta-selftest/virgl: Exclude centos7 from the kmscube test

This test does not work on centos7 so diable it (as was done in the
original series before we thought it was working).

(From OE-Core rev: c27cdf83bc2b8ff802a5c4e0b49f18174af8e34a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-selftest/lib/oeqa/runtime/cases/virgl.py

@@ -1,6 +1,7 @@
 from oeqa.runtime.case import OERuntimeTestCase
 from oeqa.core.decorator.depends import OETestDepends
 import subprocess
+import oe.lsb
 
 class VirglTest(OERuntimeTestCase):
 
@@ -12,6 +13,11 @@ class VirglTest(OERuntimeTestCase):
 
     @OETestDepends(['virgl.VirglTest.test_kernel_driver'])
     def test_kmscube(self):
+
+        distro = oe.lsb.distro_identifier()
+        if distro and distro == 'centos-7':
+            self.skipTest('kmscube is not working when centos 7 is the host OS')
+
         status, output = self.target.run('kmscube', timeout=30)
         self.assertEqual(status, 0, "kmscube exited with non-zero status %d and output:\n%s" %(status, output))
         self.assertIn('renderer: "virgl"', output, "kmscube does not seem to use virgl:\n%s" %(output))