Don't assert while handling an exception
Don't assert while handling an exception

Otherwise python produces an unreadable stack trace saying an exception
occured while handling another one.

Leaving the original timeout exception being thrown is explicit enough.

kensipe/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli