x86: Add the setjmp test to the CI

Use a proper report() in the test instead of printf(), and add
it to the unittests.cfg and the CI yaml files.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/x86/unittests.cfg b/x86/unittests.cfg
index e99b086..acdde10 100644
--- a/x86/unittests.cfg
+++ b/x86/unittests.cfg
@@ -171,6 +171,9 @@
 [s3]
 file = s3.flat
 
+[setjmp]
+file = setjmp.flat
+
 [sieve]
 file = sieve.flat
 timeout = 180