tests: qemumonitorjson: Fix few arguments of test cases

Prepare for testing of the schema of used commands by changing few
arguments to values which will not be rejected.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

tests/qemumonitorjsontest.c

@@ -1332,11 +1332,11 @@ GEN_TEST_FUNC(qemuMonitorJSONSetMigrationDowntime, 1)
 GEN_TEST_FUNC(qemuMonitorJSONMigrate, QEMU_MONITOR_MIGRATE_BACKGROUND |
               QEMU_MONITOR_MIGRATE_NON_SHARED_DISK |
               QEMU_MONITOR_MIGRATE_NON_SHARED_INC, "tcp:localhost:12345")
-GEN_TEST_FUNC(qemuMonitorJSONDump, "dummy_protocol", "dummy_memory_dump_format",
+GEN_TEST_FUNC(qemuMonitorJSONDump, "dummy_protocol", "elf",
               true)
 GEN_TEST_FUNC(qemuMonitorJSONGraphicsRelocate, VIR_DOMAIN_GRAPHICS_TYPE_SPICE,
               "localhost", 12345, 12346, NULL)
-GEN_TEST_FUNC(qemuMonitorJSONAddNetdev, "some_dummy_netdevstr")
+GEN_TEST_FUNC(qemuMonitorJSONAddNetdev, "id=net0,type=test")
 GEN_TEST_FUNC(qemuMonitorJSONRemoveNetdev, "net0")
 GEN_TEST_FUNC(qemuMonitorJSONDelDevice, "ide0")
 GEN_TEST_FUNC(qemuMonitorJSONAddDevice, "some_dummy_devicestr")