Move graph logic into package

Graph logic moves into depgraph package and makes internal
fields inaccessible. Completes feedback from @LucasRoesler
from previous PR where the dependency graph was added for 0.9.1

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Update docs for Graph and Node

Updates godoc and adds Add() method instead of using
append on the private slice.

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Print version and reduce verbosity

* revendor k3sup to prevent arch / OS from being printed in
the logs
* print version on startup
* bump minor CNI and containerd version for e2e tests
* revendor faas-provider for latest log printing update

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Update OpenFaaS core components for faasd

basic-auth-plugin: 0.18.10 -> 0.18.17
gateway: 0.18.8 -> 0.18.17
queue-worker: 0.9.0 -> 0.11.2
Signed-off-by: Hsiny <yangxinhust@hotmail.com>

Remove output fields from the logs test case

**What**
- Fix the test to match the new logs command builder, without the output
  fields flag

Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>

Improve journalctl version compat

**What**
- Remove the `output-fields` flag because not all journalctl versions
  support it
- Add a short sleep to the start of the log stream to avoid some kind of
  race/buffering condition with the Handler

Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>

Apply gofmt

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Add label for single function query

Adding label when a /system/function/<name> endpoint
is invoked as it was missed in the previous commit

Signed-off-by: Martin Dekov <mvdekov@gmail.com>

Return not implemented for logs

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Enable labeling containers

Enabling the faasd-provider to label containers

Signed-off-by: Martin Dekov <mvdekov@gmail.com>