~fix tenant regex validation

[smolo-de]

~bugfix for tenant regex validation
+add testcases
+add method to set defaultrequestheaders

[mishamyte]

Hey @smolo-de,

Thank you a lot for the contribution.

Have 2 more questions:

1. Pls check the comment to test
2. I'm curious what is your use-case for new method, related to default headers?

[smolo-de]

Hey @smolo-de,

Thank you a lot for the contribution.

Have 2 more questions:

1. Pls check the comment to test
2. I'm curious what is your use-case for new method, related to default headers?

Regarding the first point, I will take another look at it and correct it.

The new function is intended to serve as a backup and supplement in case further header information is required. For example, there is also “X-Loki-Actor-Path,” which is not currently implemented. If someone needs the option to override the headers, they could do so themselves in an emergency!

[mishamyte]

@smolo-de sorry for the delay. It looks like pipelines are failing due to violating StyleCop rules. Can you pls have a look, so we can merge it? Thanks!