zip is not available in the image used by task ibm-pak.

Request: to add zip to the image used by tas ibm-pak.

As part of the work done around CP4I, in order to be able to deploy Configurations used by App Connect Integration runtimes it is required to zip a folder that was previously cloned to use the source code, but when trying to use the zip command I got the following error:

/tekton/scripts/script-0-jpwzt: line 15: zip: command not found

As a reference, this is the script I used in my task:

```
echo "Entering test script."
cd workspace
mkdir mydir
touch mydir/test.txt
ls mydir
zip -r mydir.zip mydir
echo "Test has been completed."
```