Upgrade to 2.10.0 (#11)

Author: Eric-Arellano

3rdparty/python/default_lock.txt 3rdparty/python/default.lock3rdparty/python/default_lock.txt renamed to 3rdparty/python/default.lock

@@ -1,5 +1,5 @@
 [GLOBAL]
-pants_version = "2.10.0rc3"
+pants_version = "2.10.0"
 backend_packages = [
   "pants.backend.codegen.protobuf.python",
   "pants.backend.codegen.thrift.apache.python",