created an ssh-copy-keys helper in install

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
add a helper to append contents to a file

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
allow to bypass the sudo detection in the connection obj

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
remove ssh copy keys helper from install

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
do SSH magic when running new only

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
create a local connection helper

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
a new module for SSH utilities

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
Merge pull request #129 from alfredodeza/6646

Set SSH keys automagically when running `new`