move deployment classes and functions into separated file
mass deploy - specify the CSV content in first step is not required now
mass deploy - management ip - could be non unique in the same CSV
mass deploy - management ip - could be non unique in the same CSV (step 2)
While mass deployment, check if IP address is assigned to another device, or is not assigned at all.
lck-pep
Fixed bug
Merge pull request #379 from vi4m/deployment_fixes

Deployment fixes
Merge pull request #376 from deshipu/master

Discovery fixes
merge
Merge pull request #371 from andrzej-jankowski/master

Minor changes in mass deployment