Automatic merge from submit-queue

Fix on-premises term in error string and comments for aws provider

**What this PR does / why we need it**: fix for correct terminology of "on-premises" over "on-premise"

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: n/a

**Special notes for your reviewer**: Updated error string while doing a scrub for the incorrect term in the docs (kubernetes/kubernetes.github.io#4413).

**Release note**:

```release-note
NONE
```