veyron/services/identity: Move the identity tool to veyron/tools

Change-Id: I216f4d2fd78c3d56b359d95d12c16c6f74b31bf0
diff --git a/services/identity/identity/main.go b/tools/identity/main.go
similarity index 100%
rename from services/identity/identity/main.go
rename to tools/identity/main.go