[APM] Display configuration table above code sample

[kpatticha]

closes #142205

Additional

• use default value for service name and environment for all agents
• for consistency reorder the variables so all agents follow the same order
• for consistency add environment configuration in php agent code sample
• rename ServerUrls to ServerUrl for dotnet agent to match the latest changes (both are supported) - documentation
• todo check java agent. it also has ServerUrls - Rename Delastic.apm.server_urls to Delastic.apm.server_url
  Questions:

1. What do we want to display in the table if a variable value is empty?
   - now the column it's empy

Before

tokens	node.js	Django/Flask	RoR	Rack	Rum(Js)	Go(highlight in green)	Java(no highlight)	.Net	PHP
service name	✅	❌ commented out	✅	✅	✅	✅	✅	✅	✅
secret token	✅	✅	✅	✅	❌ (service version)	✅	✅	✅	✅
server url	✅	✅	✅	✅	✅	✅	✅	✅	✅
environment	✅	✅	✅	✅	✅	✅	✅	✅	❌

java-agent

After

Tutorial

Screen.Recording.2022-10-13.at.11.37.34.mov

Agent

Screen.Recording.2022-10-13.at.11.40.40.mov

[kpatticha]

/oblt-deploy

[kpatticha]

Unfortunately I'm unable to create a custom build due to an incident but I updated the ticket with recent recordings of the changes.

any early feedback from you @chrisdistasio @boriskirov would be really useful.

[kpatticha]

@elasticmachine merge upstream

[elasticmachine]

Pinging @elastic/apm-ui (Team:APM)

[boriskirov]

Everything looks good to me, great work @kpatticha !

[gbamparop]

It might be good to have a type defined here, it seems that it's the same for all agents?

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 1ae150c

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
apm	1318	1319	+1

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
apm	3.1MB	3.1MB	+5.0KB

History

• 💔 Build #80613 failed f0171ba
• 💚 Build #80053 succeeded 646c39d
• 💔 Build #79746 failed c6c4b2bdbd67e6e91e25fc3531154e644f2189a2

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream