Mvp demo

[rkothari007]

Changes

MVP Demo related changes

This demo does the following:
1. Loadgenerator doesn't complete the checkout if the latency from
   adding items to the cart is more than a second. The bulk of this
   latency comes from fetching the item from the product catalog. We
   have configured the delay to be high for a specific item. This
   results in order drop by 10%, because this is one of the 10 item that
   is randomly picked.
2. Added a flag to control if productcatalog service should add a delay
   of 1 second to the item.
3. Feature flag for the "productCatalogTimeout" can be toggled on/off.

Merge Requirements

For new features contributions please make sure you have completed the following
essential items:

• CHANGELOG.md updated to document new feature additions
• Appropriate documentation updates in the docs
• Appropriate Helm chart updates in the helm-charts

Maintainers will not merge until the above have been completed. If you're unsure
which docs need to be changed ping the
@open-telemetry/demo-approvers.

[linux-foundation-easycla]

• ❌ - login: @codesee-maps[bot] . The commit (72f8be1) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.
• ❌ - login: @rkothari007 / name: Rakesh Kothari . The commit (b1a7a6a, dd36652, ce48a25, 215cbfb) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[austinlparker]

Duplicate PR, closing