Automatic merge from submit-queue (batch tested with PRs 47451, 47410, 47598, 47616, 47473)

debian-base: don't remove libcap2

**What this PR does / why we need it**: when I updated the `debian-base` image earlier this week, it apparently removed the libcap2 libraries needed for some dependent images (e.g. fluentd-gcp, #47600).

By holding this package, the library isn't removed from the base image. I've verified by running https://github.com/moul/docker-diff against the `debian-base` image from 2017-02-24.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: x-ref #47386

**Special notes for your reviewer**: nothing is pushed yet.

**Release note**:

```release-note
NONE
```

/cc @timstclair @dchen1107 @luxas @kubernetes/sig-release-misc