qemu: Exclude JeOS from some of the new migration tests

As they require some capabilities not available on our JeOS.
Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

qemu/tests/cfg/migrate.cfg

@@ -123,6 +123,7 @@
                 - monotonic_time:
                     test_control_file = monotonic_time.control
         - with_stress:
+            no JeOS
             only Linux
             iterations = 1
             variants:
@@ -138,6 +139,7 @@
                     guest_stress_test = "autotest"
                     test_type = "stress_memory_heavy"
         - between_vhost_novhost:
+            no JeOS
             only Host_RHEL.6
             no Host_RHEL.6.1
             migrate_between_vhost_novhost = "yes"