Before this commit all tasks in a task group were destroyed
concurrently. This meant logging sidecars might be stopped before the
leader task whose logs still need to be shipped.

This commit blocks on the leader shutting down before signalling to
followers to shutdown.

Remove an errant # from vault policy sample.

Upgrade hashicorp/go-sockaddr/template to latest version + upgrade CHANGELOG

HCL typo fix

Update go-sockaddr to lookup ip on $PATH

Fixes #2696

Fix path used by Nomad Server HTTP Check

This package no longer exists so trying to install it broke our build.
It has been renamed docker-ce.

Fixes #2701

Explain term signal behavior for Docker tasks

Fix typo in job-dispatch docs.

canidate -> candidate.

Fix typos

Fix documentation of -tail/-f

Previously, -tail is erroneously documented as -f and -f and -n are not documented at all. 

This patch fixes both.

update middleman version 25 to 26

Fix port map interpolation for docker

Add no overlay option

Include symlinks in snapshots when migrating disks

Added insecure_options config list

This PR fixes an issue in which the value of the portmap could not be
interpolated.

Fixes https://github.com/hashicorp/nomad/issues/2680

Remove Atlas references from docs