Expose Linode Client Prometheus metrics (#302)

* Expose Linode Client Prometheus metrics

Add `--authorization-always-allow-paths="/metrics"` to command line to
allow scraping these metrics.

In addition to Linode Client metrics, standard controller and worqueue
metrics are visible by default.

To disambiguate CCM node controller work queue name, it's explicitly
named "ccm_node". That is, "node", "service" are upstream work
queues of k8s cloud-provider service controller and "ccm_node" is
the work queue of Linode CCM node controller.

Fixes #296

* Ignore coverage for client_with_metrics.go

* Add allowUnauthorizedMetrics Helm value

* Move metrics docs to getting-started sections

* Instrument healthChecker with Prometheus metrics

* Update newHealthChecker tests

* Preserve initialization order

* Remove unused timeout variable in healthChecker

* Remove unnecessary err return in newHealthChecker

Expose Linode Client Prometheus metrics (#302)

* Expose Linode Client Prometheus metrics

Add `--authorization-always-allow-paths="/metrics"` to command line to
allow scraping these metrics.

In addition to Linode Client metrics, standard controller and worqueue
metrics are visible by default.

To disambiguate CCM node controller work queue name, it's explicitly
named "ccm_node". That is, "node", "service" are upstream work
queues of k8s cloud-provider service controller and "ccm_node" is
the work queue of Linode CCM node controller.

Fixes #296

* Ignore coverage for client_with_metrics.go

* Add allowUnauthorizedMetrics Helm value

* Move metrics docs to getting-started sections

* Instrument healthChecker with Prometheus metrics

* Update newHealthChecker tests

* Preserve initialization order

* Remove unused timeout variable in healthChecker

* Remove unnecessary err return in newHealthChecker

ignore if env vars are empty (#289)

[feat] add support for custom BGP environment overrides via environme…

…nt variables (#277)

* add support for custom BGP environment overrides via environment variables

* address review comments

* add test for bgp custom id map

---------

Co-authored-by: Rahul Sharma <rahsharm@akamai.com>

ignore if env vars are empty (#289)

[feat] add support for custom BGP environment overrides via environme…

…nt variables (#277)

* add support for custom BGP environment overrides via environment variables

* address review comments

* add test for bgp custom id map

---------

Co-authored-by: Rahul Sharma <rahsharm@akamai.com>

[repo-ci-improvement] : update GHA to run e2e tests (#248)

* update GHA to run e2e tests

* simplify go versions used for ci tests

* update helm version, update Makefile

* update k8s version

* fix linting

* address review comments

[repo-ci-improvement] : update GHA to run e2e tests (#248)

* update GHA to run e2e tests

* simplify go versions used for ci tests

* update helm version, update Makefile

* update k8s version

* fix linting

* address review comments

[fix] : fix internal ip ordering (#247)

* fix internal ip ordering

* add test to make sure ip's are in specific order

[fix] : fix internal ip ordering (#247)

* fix internal ip ordering

* add test to make sure ip's are in specific order