qemu,qmp: Enable gas security checker

This commit enables the gas security checker on govmm builds.  The
security checker has signalled 4 issues all of which I've checked
and have determined to be non issues.  These issues are disabled
by this commit.

Signed-off-by: Mark Ryan <mark.d.ryan@intel.com>

qemu/qemu.go

@@ -1652,6 +1652,7 @@ func LaunchCustomQemu(ctx context.Context, path string, params []string, fds []*
 		path = "qemu-system-x86_64"
 	}
 
+	/* #nosec */
 	cmd := exec.Command(path, params...)
 	if len(fds) > 0 {
 		logger.Infof("Adding extra file %v", fds)