Merge pull request #3 from alvico/master_rebase

Modifications for the test vmconnectivity to work with cirros 3.2
Refactor fo the ssh inception, now ssh is able to build n-hop tunnels into the
final destinity also added a timeout into the exec command function
updated helper module, by removing unused old class
Refactor fo the ssh inception, now ssh is able to build n-hop tunnels into the
final destinity.
Merge pull request #4 from abel-navarro/alvico-master-fix

Refactor fo the ssh inception, now ssh is able to build n-hop tunnels
removed sshtunnel class