get pxe - minor changes
get pxe - authentication is not necessary
Properly update device's rack and dc on cache update
get pxe - better exceptions catching
Show core counts graphs in the venture info
Fix wrong order of columns in the export devices to csv
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)
Merge pull request #372 from deshipu/master

Show core counts graphs and properly update device's rack and dc on cache update
Merge pull request #370 from quamilek/dev2

Fix wrong order of columns header in the export devices to csv
Assume that auth is community by default in snmp
Add E5-2640 to cores heuristics
Merge github.com:allegro/ralph
Avoid empty cpu family in lshw
Use defaults in concurrent_get_or_create in ssh_onstor
Avoid empty family in ilo_hp
first free ip - top margin
While mass deployment, check if IP address is assigned to another device, or is not assigned at all.