Log Message:
Update ruby-thrift_client package to 0.6.2.

v0.6.2 Remove lingering thrift v0.5.0 reference.

v0.6.1 Add connect timeout. Bump thrift dependency to ~> v0.6.0.

v0.6.0 Fix bug where we'd try to mark the current server down when we didn't \ 
have a current server.
Upgrade to thrift 0.5.

v0.5.0 Add support for wrapping exceptions, so that Thrift::Foo can become \ 
Greeter::Foo.
Make server_retry_period work the way you expect.
Better bookkeeping around marking servers as dead.

v0.4.7 fix thrift gem dependency