Automatic merge from submit-queue (batch tested with PRs 44606, 46038)

Add ip-masq-agent addon to the addons folder. 

This also ensures that under gce we add this DaemonSet if the non-masq-cidr
is set to 0/0.



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

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

**Special notes for your reviewer**:

**Release note**:
```release-note
Add ip-masq-agent addon to the addons folder which is used in GCE if  --non-masquerade-cidr is set to 0/0
```