Corrected version paths + minor corrections

- Corrected all paths to correct versions for packages and source

- Suggest changing versions from 1.0.0/1.1.0/1.2.0/1.2.1 to 1.0.3/1.1.4/1.2.0/1.2.1 push people to use latest bug fixed versions. Left 1.2.0 in there as advised by simonvc that we still have plenty of customers using it so useful to keep it in place Minor

- Missing back ticks would not execute lsb-release resulting in incorrect path in apt sources, apt-breakage and unhappiness all round

- Post installation refers to fast track as 3 node deployment, when it's 4

- Fixed: SmartOS installation curl output to file rather than stdout