comment out dependencies in network_checker

some ubuntu packages doesnot use format python-{name}

Change-Id: Iec7222513ed368ee4c1bc43c28db6c35d125330b
Subs 1.0.0.0 -> 198.18.1.[1|2] in network checker

It turned out that some network equipment filters
out those fake addresses 1.0.0.0 which we used for
network checker probing packages. 198.18.1.0/24 is
one of those ranges which are reserved for benchmarking
network connectivities http://tools.ietf.org/html/rfc2544,
so it seems to be appropriate to use
those addresses for this case by default.

Change-Id: Iddb7e71de8746c5e55de5468fadc0b6d45c93800
Closes-Bug: #1291655
Merge "Subs 1.0.0.0 -> 198.18.1.[1|2] in network checker"
Merge "comment out dependencies in network_checker"
Fix entry point for `nailgund`

Change-Id: I4fdae73532966cc8e3665ee1b7ac8a26d258d86c
Closes-Bug: #1297368
Move Naily to Astute

Implements: blueprint move-naily-to-astute-repo

Change-Id: I8a2dd1474fac4d12d1f7bb35f43a051df57371d2