Description of problem

When a new Client is created, it tries to connect to
a socket no matter if exist or not. This is not
and issue because the grpc api will time out after
some time. But some simple task like kata-runtime list can
take a lot of the socket does not exist because the
VM and proxy top working.

Expected result

If a Client tries to connect to a socket return and error
immediately.

Actual result

The new client take a long time before fail.

(replace this text with the output of the kata-collect-data.sh script, after
you have reviewed its content to ensure it does not contain any private
information).