Added instructions to set the main branch as default branch in labs where missing

[rob-foulkrod]

Multiple Labs

Related Issue #585

Link related Github Issue 🢂 Fixes #585

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Changes proposed in this pull request:

added the following additional step to the eShopOnWeb import process to set the default branch to main.

Task 3: (skip if done) Set main branch as default branch

1. Go to Repos>Branches.
2. Hover on the main branch then click the ellipsis on the right of the column.
3. Click on Set as default branch.

[LuizMacedo]

@rob-foulkrod what if we add in the lab prerequisites (Validate lab environment) instead of every lab?

[rob-foulkrod]

That's fine. But we currently have the import steps in every lab. So it is included in the validate lab env steps.

If you want to delete and reference that. sounds good too. But I was moving as few pieces of cheese as possible. :)

[LuizMacedo]

Thanks @rob-foulkrod. Let's keep it for now but plan to review the pre-requisites and move to the validate lab environment in our next releases.