Fixes #5803: Fix method getSoftware from a Node
Merge pull request #51 from VinceMacBuche/bug_5803/improve_get_software_function

Fixes #5803: Fix method getSoftware from a Node
Merge branch 'branches/rudder/2.6' into branches/rudder/2.10
Merge branch 'branches/rudder/2.10' into branches/rudder/2.11