Add documentation for different way to setup promtails

Update logcli doc

adding some docs on how to identify and connect to promtail pod

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

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

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

Signed-off-by: Xiang Dai <764524258@qq.com>

* adding a few more test cases for entry parsing docker format

* adding testify assert and require to clean up tests

* some tweaking to improve readability

Adding a configurable timeout for calls to the loki server.
Updating promtail test to set sane defaults for all configurations and then override for testing.
Removing .idea folder from .gitignore, we should encourage people (and myself) to use global ignore for IDE configs

Already happened, safe to remove?

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

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

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

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

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

Signed-off-by: Xiang Dai <764524258@qq.com>

Signed-off-by: kun <oiooj@qq.com>

Signed-off-by: Xiang Dai <764524258@qq.com>

Signed-off-by: Xiang Dai <764524258@qq.com>

cmd/logcli: support load config from file

Signed-off-by: Xiang Dai <764524258@qq.com>

Signed-off-by: Xiang Dai <764524258@qq.com>

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

Change image pull default policy to Always

- Loki and promtail are under heavy development, always pulling makes sure bug fixes are shipped

Loki pod needs secret mounting privileges

fixed promtail ds, it had deployment options

adding third party lib for Glob pattern matching which supports /**/ style subdirectory matching (#331)

* adding third party lib for Glob pattern matching which supports **
refactor promtail_test to be easier to read and include more tests

* Adding a sync() function to filetarget which runs on a timer to catch any events missed by fsnotify

* moving where we mark the final position to avoid a race condition exposed in testing, we want to stop the tailer before shutting down our tailer loop

* Fix changes from PR and refactor to remove circular imports and make config consistent

* Adding an "integration" type unit test which tests promtail as a whole

* fixing a bunch of imports I munged
moved tailer to its own file
refactoring filetarget to make synclogic easier to follow and reused as much as possible