OSSM-11013 [DOCS] Review and update Egress docs for ambient mode

[shreyasiddhartha]

Change type: Doc update; Review and update Egress docs for ambient mode

Doc JIRA: https://issues.redhat.com/browse/OSSM-11013

Fix Version: service-mesh-docs-main and service-mesh-docs-3.2

Doc Preview: https://100884--ocpdocs-pr.netlify.app/openshift-service-mesh/latest/gateways/ossm-directing-outbound-traffic.html

SME Review/QE Review: @cam-garrison @sridhargaddam @ctartici @unsortedhashsets
Peer Review: @Dhruv-Soni11

[ocpdocs-previewbot]

🤖 Mon Oct 27 12:02:13 - Prow CI generated the docs preview:

https://100884--ocpdocs-pr.netlify.app/openshift-service-mesh/latest/gateways/ossm-directing-outbound-traffic.html

[shreyasiddhartha]

/label service-mesh

[cam-garrison]

Some nit picks and a structuring request

[sridhargaddam]

Initial pass...

[unsortedhashsets]

LGTM from executions pov:

With @sridhargaddam fixes:

oc get gateways.gateway.networking.k8s.io waypoint -n egress-gateway

->

NAME       CLASS            ADDRESS          PROGRAMMED   AGE
waypoint   istio-waypoint   172.30.227.148   True         9s

And test-pod curl command execution left log in ztunnel pod:

2025-10-24T08:08:35.242159Z info access connection complete src.addr=[fd01:0:0:5::b0]:56288 src.workload="test-pod" src.namespace="egress-gateway" src.identity="spiffe://cluster.local/ns/egress-gateway/sa/default" dst.addr=[fd01:0:0:5::af]:15008 dst.hbone_addr=[2001:2::2]:80 dst.service="httpbin.org" dst.workload="waypoint-5b668759d5-vrnx8" dst.namespace="egress-gateway" dst.identity="spiffe://cluster.local/ns/egress-gateway/sa/waypoint" direction="outbound" bytes_sent=78 bytes_recv=540 duration="957ms"

Tested with DualStack/IPv6/ROSA clusters

However, small comment on extra "+" in text

[sridhargaddam]

Thanks for addressing the review comments @shreyasiddhartha. Please take a look at the latest comment from Mikhail and we should be good.

[Dhruv-Soni11]

Hey @shreyasiddhartha, good job on the PR. Please view the few comments I've provided you here. Do reach out if you need help. Thanks!!

[openshift-ci]

@shreyasiddhartha: all tests passed!

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[rh-tokeefe]

/cherrypick service-mesh-docs-3.2

[openshift-cherrypick-robot]

@rh-tokeefe: new pull request created: #101090

In response to this:

/cherrypick service-mesh-docs-3.2

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