[receiver/httpcheck] Add DNS Duration Timing Metric

[StephanSalas]

Description: Add a DNS Duration Timing Metric to ensure that the DNS Timing is measured if the "endpoint" configuration variable is a FQDN/Host. This allows for more detailed measurements within the total http Layer-7 call flow. This also helps developers understand the latency distribution between the DNS Portion of Layer7, and all the other components.

Link to tracking Issue: #34987

Testing: Automated Tests need to be added

Documentation: Documentation is auto-generated, however README.MD needs to be updated for this component to ensure that DNS Metric is called out / documented.

[linux-foundation-easycla]

• ✅ login: StephanSalas / name: Stephan Salas (468a3e5, df8b289)
• ❌ The email address for the commit (3b929e7) is not linked to the GitHub account, preventing the EasyCLA check. Consult this Help Article and GitHub Help to resolve. (To view the commit's email address, add .patch at the end of this PR page's URL.) For further assistance with EasyCLA, please submit a support request ticket.

[crobert-1]

Hello @StephanSalas, for this PR to be able to be reviewed, the EasyCLA check must pass. It looks like your commits were done with a different email address than what your GitHub account is using.

[StephanSalas]

Hello @StephanSalas, for this PR to be able to be reviewed, the EasyCLA check must pass. It looks like your commits were done with a different email address than what your GitHub account is using.

Agreed! I think the only commit that is conflicting is the merge commit, which is commited by other devs. May have to redo this PR and remove that merge commit from upstream.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.