containerd build clean on Solaris (#203)

* containerd build clean on Solaris

Signed-off-by: Amit Krishnan <krish.amit@gmail.com>

* Vendor golang.org/x/sys

Signed-off-by: Amit Krishnan <krish.amit@gmail.com>

supervisor/machine_solaris.go

@@ -0,0 +1,15 @@
+package supervisor
+
+import (
+	"errors"
+)
+
+type Machine struct {
+	Cpus   int
+	Memory int64
+}
+
+func CollectMachineInformation() (Machine, error) {
+	m := Machine{}
+	return m, errors.New("supervisor CollectMachineInformation not implemented on Solaris")
+}