site: Update echo-server image

[spowelljr]

Closes #11107
Closes #15086

Problem:
Original image was k8s.gcr.io/echoserver:1.4 but it didn't work on arm64.

Updated image to nginx:1.23 but it wasn't an echo-server, just displayed the nginx welcome screen.

Added image ealen/echo-server:0.7.0 to ingress tutorial, but image has a critical CVE.

✗ Critical severity vulnerability found in zlib/zlib
  Description: Out-of-bounds Write
  Info: https://security.snyk.io/vuln/SNYK-ALPINE316-ZLIB-2976176
  Introduced through: zlib/zlib@1.2.12-r1, apk-tools/apk-tools@2.12.9-r3
  From: zlib/zlib@1.2.12-r1
  From: apk-tools/apk-tools@2.12.9-r3 > zlib/zlib@1.2.12-r1
  Fixed in: 1.2.12-r2

Solution:
Updated all references to kicbase/echo-server:1.0

• Image works on both amd64 & arm64
• Image is a true echo-server

Request served by hello-minikube-564c59b4dd-4tch4

HTTP/1.1 GET /test123

Host: 192.168.105.34:31791
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Connection: keep-alive
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

• Image has no CVEs

Testing kicbase/echo-server:1.0...

Package manager:   linux
Project name:      docker-image|kicbase/echo-server
Docker image:      kicbase/echo-server:1.0
Platform:          linux/arm64
Licenses:          enabled

✔ Tested kicbase/echo-server:1.0 for known issues, no vulnerable paths found.

Note that we do not currently have vulnerability data for your image.

-------------------------------------------------------

Testing kicbase/echo-server:1.0...

Package manager:   gomodules
Target file:       /bin/echo-server
Project name:      github.com/jmalloc/echo-server
Docker image:      kicbase/echo-server:1.0
Licenses:          enabled

✔ Tested 9 dependencies for known issues, no vulnerable paths found.


Tested 2 projects, no vulnerable paths were found.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: medyagh, spowelljr

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