Automatic merge from submit-queue (batch tested with PRs 62423, 66180, 66492, 66506, 65242). 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>.

Adding IKS functionality to kubemark

**What this PR does / why we need it**:
This PR adds bash scripts in which kubemark is able to be run on IKS clusters. This adds versatility to the testing ability of kubemark by adding another cloud provider and example of use. The scripts to clean up kubemark after use are also included. In addition to this, minor changes were added to other kubemark related files to increase cloud-provider flexibility.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
No issues will be fixed, as this is an extension to a feature.

**Special notes for your reviewer**:
I currently have the IKS scripts separate from the default ones, which are mainly based off of GCE. If it is preferable, I could combine them into single scripts which prompt the user to choose which cloud provider to test. If there are any issues with the scripts or code, please let me know. Thank you!

**Release note**:

```release-note
NONE
```