Support storing sensitive notification settings securely/encrypted.
Move slack notifier url and api token to secure settings.
Migrating slack notifier to store token and url encrypted is currently
a manual process by saving an existing slack alert notification channel.
saving an existing slack alert notification channel will reset the stored
non-secure url and token.
Closes#25113
Ref #25967
Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
* Build: use golangci-lint as a make command
* Since gometalinter was deprecated in favor of golangci-lint so it was
replaced by it. Responsibilities held by the gometalinter was moved to
golangci-lint
* There was some changes in implementation (that was also mentioned in
the code comment) between the tools, which uncovered couple errors
in the code. Those issues were either solved or disabled by
the inline comments
* Introduce the golangci-lint config, to make their
configuration more manageable
* Build: replace backend-lint.sh script with make
This way we are able to edit notification behavior per notifier.
This would be usefull to let some notifiers send notifications,
even when the state doesn't change, or with custom condition.
Signed-off-by: Thibault Chataigner <t.chataigner@criteo.com>