Use copy of config instead of modifying the original configuration

[refs]

closes #672

We do this trick all over the place, it is because Micro needs to know beforehand which flags to parse, and they only need to be passed down.

[phil-davis]

The tests could not create any accounts. I rebased just now to get up-to-date CI.

[phil-davis]

I have restarted CI a couple of times. Test pipelines seem to fail a bit "randomly", e.g. https://drone.owncloud.com/owncloud/ocis/1249/20/7

When they fail, pretty much all the scenarios fail. They start getting an error like:

Provisioning::usersHaveBeenCreatedUnexpected failure when creating a user: HTTP status 400 HTTP reason Bad Request OCS status 400 OCS message account already exists (Exception)

And from there it's "all over". So some problem happens with deleting the account at the end of the previous scenario.

[refs]

I have restarted CI a couple of times. Test pipelines seem to fail a bit "randomly", e.g. drone.owncloud.com/owncloud/ocis/1249/20/7

When they fail, pretty much all the scenarios fail. They start getting an error like:

Provisioning::usersHaveBeenCreatedUnexpected failure when creating a user: HTTP status 400 HTTP reason Bad Request OCS status 400 OCS message account already exists (Exception)

And from there it's "all over". So some problem happens with deleting the account at the end of the previous scenario.

Hmm I've seen that in some of my past PR's that the tests fail to delete the provided user, somehow. And what I saw in the past was that the service died and could not get more clients to the accounts service, but that doesn't seem to be the case here.

[refs]

@phil-davis hm, https://drone.owncloud.com/owncloud/ocis/1266

[phil-davis]

I am also seeeing test pipelines like https://drone.owncloud.com/owncloud/ocis/1272/15/7 that get a long list of test fails. "something happens" (tm), users do not seem to be created and so everything fails. I suspect that something goes wrong in the accounts service or...

Re-running the drone CI of results in "mass failure" in some other pipeline. Or you get lucky and everything passes.

[sonarcloud]

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