Add missing domain_conf.h include in security_manager.h

The security_manager.h header is not self-contained because it
uses the virDomainDefPtr without first including domain_conf.h
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

src/security/security_manager.h

@@ -23,6 +23,8 @@
 #ifndef VIR_SECURITY_MANAGER_H__
 # define VIR_SECURITY_MANAGER_H__
 
+# include "domain_conf.h"
+
 typedef struct _virSecurityManager virSecurityManager;
 typedef virSecurityManager *virSecurityManagerPtr;