Automatic merge from submit-queue (batch tested with PRs 62407, 62602, 62539, 62639, 62647). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix kubemark image-registry name assignment

Allows to create kubemark instance without explicitly specifying the project name.
start-kubemark.sh used to not run properly when using project name acquired from the cloud provider.

```release-note
NONE
```