Adds StoragePool(), StoragePoolRefresh() (#28)

This adds two new methods:
- `StoragePool()`, used to lookup a storage pool by name.
- `StoragePoolRefresh()`, used to refresh a storage pool by name.

libvirttest/libvirt.go

@@ -217,6 +217,34 @@ var testDomainStateReply = []byte{
 	0x00, 0x00, 0x00, 0x01, // reason
 }
 
+var testStoragePoolLookup = []byte{
+	0x00, 0x00, 0x00, 0x38, // length
+	0x20, 0x00, 0x80, 0x86, // program
+	0x00, 0x00, 0x00, 0x01, // version
+	0x00, 0x00, 0x00, 0x54, // procedure
+	0x00, 0x00, 0x00, 0x01, // type
+	0x00, 0x00, 0x00, 0x00, // serial
+	0x00, 0x00, 0x00, 0x00, // status
+
+	// pool: name = default
+	0x00, 0x00, 0x00, 0x07, 0x64, 0x65, 0x66, 0x61,
+	0x75, 0x6c, 0x74, 0x00,
+
+	// uuid = bb30a11c084648278bba3e6b5cf1b65f
+	0xbb, 0x30, 0xa1, 0x1c, 0x08, 0x46, 0x48, 0x27,
+	0x8b, 0xba, 0x3e, 0x6b, 0x5c, 0xf1, 0xb6, 0x5f,
+}
+
+var testStoragePoolRefresh = []byte{
+	0x00, 0x00, 0x00, 0x1c, // length
+	0x20, 0x00, 0x80, 0x86, // program
+	0x00, 0x00, 0x00, 0x01, // version
+	0x00, 0x00, 0x00, 0x53, // procedure
+	0x00, 0x00, 0x00, 0x01, // type
+	0x00, 0x00, 0x00, 0x00, // serial
+	0x00, 0x00, 0x00, 0x00, // status
+}
+
 var testListPoolsReply = []byte{
 	0x00, 0x00, 0x00, 0x40, // length
 	0x20, 0x00, 0x80, 0x86, // program
@@ -333,6 +361,10 @@ func (m *MockLibvirt) handleRemote(procedure uint32, conn net.Conn) {
 	switch procedure {
 	case constants.ProcAuthList:
 		conn.Write(m.reply(testAuthReply))
+	case constants.ProcStoragePoolRefresh:
+		conn.Write(m.reply(testStoragePoolRefresh))
+	case constants.ProcStoragePoolLookupByName:
+		conn.Write(m.reply(testStoragePoolLookup))
 	case constants.ProcConnectOpen:
 		conn.Write(m.reply(testConnectReply))
 	case constants.ProcConnectClose: