Updating docs
Rebase fixes

adding CRI and Docker format pipeline stage extensions
adding backwards compatibility with current config

Co-authored-by: Edward Welch <edward.welch@grafana.com>

Moved the check for already closed to make sure we honor this check when `immediate` flushing is requested

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

Signed-off-by: Steven Sheehy <ssheehy@firescope.com>

make clean removes `pkg/promtail/server/ui/assets_vfsdata.go` which meant the `pkg/promtail/server/ui/assets_vfsdata.go: assets` target is never activated causing a build error, updating to make the target hit on `server.go` which has a dependency on the deleted `assets_vfsdata.go` triggering a run of `make assets` before go builds that file (#555)

Signed-off-by: Steven Sheehy <ssheehy@firescope.com>

* fix backward compatibility with client config

* fix comment

* Adds the ability to provide multiple Loki URL

For backward compatibility `client:` still works with flag.

* add some tests for multi client

* update ksonnet module to support multiple client

* fix comment

* fix lint issues

* add a custom server for loki with assets embedded

* adds a targets page for promtail to see discovered files and labels

* lint fixes

* fix css table size

* add service discovery logic

* add service discovery template

* add promtail pages documentation

* ignored gen file in linter

* switch to golangci-lint linter

* fixes for review comments