Add Secrets() (#29)

This adds the `Secrets()` method, used to retrieve all secrets managed
by the libvirt daemon.

libvirttest/libvirt.go

@@ -217,6 +217,33 @@ var testDomainStateReply = []byte{
 	0x00, 0x00, 0x00, 0x01, // reason
 }
 
+var testSecretsReply = []byte{
+	0x00, 0x00, 0x00, 0x40, // length
+	0x20, 0x00, 0x80, 0x86, // program
+	0x00, 0x00, 0x00, 0x01, // version
+	0x00, 0x00, 0x01, 0x1f, // procedure
+	0x00, 0x00, 0x00, 0x01, // type
+	0x00, 0x00, 0x00, 0x00, // serial
+	0x00, 0x00, 0x00, 0x00, // status
+
+	// list of secrets
+	0x00, 0x00, 0x00, 0x01,
+
+	// first secret
+	// UUID: 19fdc2f2fa64-46f3bacf42a8aafca6dd
+	0x19, 0xfd, 0xc2, 0xf2, 0xfa, 0x64, 0x46, 0xf3,
+	0xba, 0xcf, 0x42, 0xa8, 0xaa, 0xfc, 0xa6, 0xdd,
+
+	// usage type: (1, volume)
+	0x00, 0x00, 0x00, 0x01,
+
+	// usage id: "/tmp"
+	0x00, 0x00, 0x00, 0x04, 0x2f, 0x74, 0x6d, 0x70,
+
+	// end of secrets
+	0x00, 0x00, 0x00, 0x01,
+}
+
 var testStoragePoolLookup = []byte{
 	0x00, 0x00, 0x00, 0x38, // length
 	0x20, 0x00, 0x80, 0x86, // program
@@ -377,6 +404,8 @@ func (m *MockLibvirt) handleRemote(procedure uint32, conn net.Conn) {
 		conn.Write(m.reply(testDomainsReply))
 	case constants.ProcConnectListAllStoragePools:
 		conn.Write(m.reply(testListPoolsReply))
+	case constants.ProcConnectListAllSecrets:
+		conn.Write(m.reply(testSecretsReply))
 	case constants.ProcDomainGetState:
 		conn.Write(m.reply(testDomainStateReply))
 	case constants.ProcDomainMigrateSetMaxSpeed: