Revert "remote: remove unused constant for libvirtd config file"

The constant is not unused and breaks the build of the remote driver.

This reverts commit 86fbce56.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

src/remote/remote_driver.h

@@ -34,6 +34,7 @@ unsigned long remoteVersion(void);
 #define LIBVIRTD_PRIV_UNIX_SOCKET LOCALSTATEDIR "/run/libvirt/libvirt-sock"
 #define LIBVIRTD_PRIV_UNIX_SOCKET_RO LOCALSTATEDIR "/run/libvirt/libvirt-sock-ro"
 #define LIBVIRTD_USER_UNIX_SOCKET "libvirt-sock"
+#define LIBVIRTD_CONFIGURATION_FILE SYSCONFDIR "/libvirt/libvirtd.conf"
 
 /* Defaults for PKI directory. */
 #define LIBVIRT_PKI_DIR SYSCONFDIR "/pki"