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]

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

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