parallels: rewrite parallelsApplyConfig with SDK

Rewrite code, which applies domain configuration given
to virDomainDefineXML function to the VM of container
registered in PCS.

This code first check if there are unsupported parameters
in domain XML and if yes - reports error. Some of such
parameters are not supported by PCS, for some - it's not
obvious, how to convert them into PCS's corresponding params,
so let's put off it, and implement only basic params in
this patch.
Signed-off-by: NDmitry Guryanov <dguryanov@parallels.com>

src/parallels/parallels_sdk.h

@@ -44,3 +44,7 @@ typedef int (*prlsdkChangeStateFunc)(parallelsConnPtr privconn, PRL_HANDLE sdkdo
 int
 prlsdkDomainChangeState(virDomainPtr domain,
                         prlsdkChangeStateFunc chstate);
+int
+prlsdkApplyConfig(virConnectPtr conn,
+                  virDomainObjPtr dom,
+                  virDomainDefPtr new);