Network verify running added

Change-Id: I7bfc0297832a78562e5a2715f7a588268d694b7f
Add some options to system_tests

Change-Id: I8238a66d5d80e46c61e2382704749eb9105d53ac
ntp time sync for nodes on bootstrap stage

Change-Id: Ib201685251d1a4059f3ae10917c8f7d467fb1336
Merge "ntp time sync for nodes on bootstrap stage"
Merge "Network verify running added"
Merge "Add some options to system_tests"
2479: discard any existing disk layout

Change-Id: I3fdb5f7612d0408ca755b5c455d0cdd43e4a1174
Merge "2479: discard any existing disk layout"
Refactoring system tests on python-proboscis

Change-Id: Iae82bece4923db898836db405cddc81f94526913