Automatic merge from submit-queue (batch tested with PRs 66554, 66616, 66695, 66681). 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>.

Add dnsmasq to test/images/dnsutils

**What this PR does / why we need it**:

We currently use k8s.gcr.io/k8s-dns-dnsmasq:1.14.5 in the
dns_common.go file. Looking deeper, all we need is "/usr/sbin/dnsmasq"
from that image. So just enhance the dnsutils image and throw dnsmasq
into it. This makes it easier as the dockerfiles/sidecars etc in
kubernetes/dns is not really needed. Note that a previous attempt to add
manifests to that repo fell through in PR 30 in that repo (since we were
moving to coredns).

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

**Special notes for your reviewer**:
/cc @luxas 
/cc @ixdy 
/cc @mkumatag 

**Release note**:

```release-note
NONE
```