Automatic merge from submit-queue (batch tested with PRs 47435, 46044)

IPv6 support for getting node IP

As part of ChooseHostInterface(), it will call a function to try to get the
global IP for the host, by looking at all the system interfaces and select
the first IP that is not a loopback, link-local, or point-to-point IP.

This commit does the following:

- Allows IPv6 non-local IPs to be selected.
- IPv4 takes priority (checks all interfaces for IPv4 addresses and
  then checks all interfaces for IPv6), for backward compatibility.
- Adds UTs for code coverage (was no coverage of underlying function),
  increasing from 62% to 85%.
- Improved logging and reporting for error conditions.
- Minor renaming of functions and variables for readability.



**What this PR does / why we need it**:
This will be part of several PRs to add IPv6 support in apimachinery area for use by Kubernetes. It partially fixes the issue.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: xref #44848

**Special notes for your reviewer**:
The intent is to break up the PR 45116 into multiple PRs to take on this change a piece at a time.

**Release note**:

```release-noteNONE
```