This will need to get better for testing the offset stitching
logic in the polling case.

Until they can be mocked, they can't be used

Just verifying the log code works

Supports:
  - Reading the head of a log
  - Reading the tail of a log
  - Following a log in one of two ways:
    - Streaming the HTTP request (using fetch res.getReader)
    - Polling the log endpoint (using EC timeouts)

Add Packer/Terraform support for Azure

 namespace jobcreate bug fix

Rebase and merge of docker sysctl support

Original code checked to see if the user had submit-job on the default namespace.

Update nomad guide for dynamic certificate reloading

doc: fix logs size

Fix error messages for transitioning jobs to/from periodic

update API docs for /agent/self from POST to GET

Populate DisplayMessage in various http endpoints 

The error messages are flipped; when you transition a job from _not_ being periodic to being periodic you get the message "cannot update periodic job to being non-periodic", and vice versa.