Add origin to client in SLM task

[samxbr]

This change grants the client privilege to call the get snapshot API.

[samxbr]

The previous tests did not catch this because security is not enabled by default. I want to get the change up first, will also look into testing with security.

[elasticsearchmachine]

Hi @samxbr, I've created a changelog YAML for you.

[elasticsearchmachine]

Pinging @elastic/es-data-management (Team:Data Management)

[dakrone]

Should we just wrap the client here, so that it does not need to be wrapped in any other place?

[samxbr]

I was considering that too, and alternatively I was also thinking about adding it here, but didn't do it because maybe we will want to use a different origin on other place in this class?

But on second thought now, we could always wrap again if we need to.

[dakrone]

LGTM, should this be backported also? (I can't remember if we need it elsewhere)

[samxbr]

LGTM, should this be backported also? (I can't remember if we need it elsewhere)

Double checked, the related SLM change was on 9.2