Change qemuSetSchedularParameters to use AFFECT_CURRENT

When adding variants of parameter setting APIs which accepted
flags, the existing APIs were all adapted internally to pass
VIR_DOMAIN_AFFECT_CURRENT to the new API. The QEMU impl
qemuSetSchedularParameters was an exception, which instead
used VIR_DOMAIN_AFFECT_LIVE. Change this to match other
compatibility scenarios, so that calling

   virDomainSetSchedularParameters(dom, params, nparams);

Has the same semantics as

   virDomainSetSchedularParametersFlags(dom, params, nparams, 0);

And

   virDomainSetSchedularParametersFlags(dom, params, nparams, VIR_DOMAIN_AFFECT_CURRENT);
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
(cherry picked from commit 4da9b2c1)

src/qemu/qemu_driver.c

@@ -7954,7 +7954,7 @@ qemuSetSchedulerParameters(virDomainPtr dom,
     return qemuSetSchedulerParametersFlags(dom,
                                            params,
                                            nparams,
-                                           VIR_DOMAIN_AFFECT_LIVE);
+                                           VIR_DOMAIN_AFFECT_CURRENT);
 }
 
 static int