transport: ssh, keeping the original path

[mcuadros]

For some reason, we where removing the initial "/" in the path, this is wrong:

• At GitHub, /foo and foo are exactly the same thing
• In a bare git server, /foo and foo not are the same thing, ending in a "Not Found repository"

I don't know how provide a test because, this was not tested, so since I am removing "feature" don't require a test, at least as I see

[codecov-io]

Current coverage is 77.41% (diff: 0.00%)

Merging #189 into master will decrease coverage by 0.67%

@@             master       #189   diff @@
==========================================
  Files            92         92          
  Lines          5882       5880     -2   
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
- Hits           4593       4552    -41   
- Misses          804        851    +47   
+ Partials        485        477     -8   

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