IPSet Netlink Protocol splits big sets into several netlink messages.
First message contains all metadata about a set, but just a part of
all entries. Following messages contains only remaining entries.

Add support for big sets in the ipset mgr.

Bump Lashup

Move from Lager to Logger

Leverage exponential backoff with requests to Mesos

Add syntax_tools, compiler, and backoff as runtime deps

Mesos listener is honest now again when asked if it is a leader or not

Wait till agents become active before fanning out Mesos tasks

Bump Lashup

Task update leads to two DNS zone updates

DC/OS overlay networks should be compared by-value

Remove support for set mode from dcos dns

Move common logic from dcos_net_mesos to new behavior, so
it can be re-used in l4lb later.

L4lb manager receives update from mesos leader. Load balancer
doesn't have to check reachability of nodes because it always
have consistent state.

Operator Streaming API in L4LB

Codified networking run book

Also,
 - make the script compatible with DC/OS >= 2.0
 - fix indentation
 - make it use jq only if it is available

Save netstat output

Wrap the "main" logic into a `main` function that allows for easier use
via `curl <url> | bash` should a user desire to do so.

This reverts commit c0f07b2, reversing
changes made to eb72421.

Revert "Merge pull request #189 from dcos/urbanserj/l4lb"

Make runbook a bit more sysadmin friendly

Instead of staticly setting the weight to `1` always, set it only to `1`
when in a `running` state. `killing` and any other state will be set to
`0` to prevent new connections from being sent to the backend, but still
allow existing connections through.

When a task is unhealthy, we should not sever conenctions by removing it
from the VIP. Instead set the weight to 0 to prevent new connections,
while allowing existing connections.

Handle TASK_KILLING state for loadbalancing

Adds testing that the different backend selection and manupulation
functions work with and without the weight being specified. Confirms
that if an agent populates a VIP using the old code that the new code
won't crash.

Fwd vip weight regression

Since the network runbook can be used as a lite "bundle" capture more
data.

runbook: capture more data

runbook: capture vxlan state and nclock