Alfresco does not understand well module versions with 3 numbers

[AntonioSoler]

I recently released version 1.7 and due some quick bugfixing I had to release 1.7.1 and 1.7.2 this causes issues if you install 1.7.2 on a system where 1.7.1-SNAPSHOT were used because snapshot versions have a big number after the version number.
As explained here:
https://issues.alfresco.com/jira/browse/MNT-11585
Alfresco module versions have to be incremental so an error might appear.
I'm going to use again the 2 numbers nomenclature to avoid this.