Add the reload command to the env start output

[FlorentClarret]

What does this PR do?

Mention the env reload command to the env start output.

Motivation

Forgot to reload it once and it's easier to copy/paste it

Additional Notes

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• PR title must be written as a CHANGELOG entry (see why)
• Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• PR must have changelog/ and integration/ labels attached

[codecov]

Codecov Report

Merging #12977 (7925a4c) into master (4a3ec76) will increase coverage by 0.00%.
The diff coverage is n/a.

Flag	Coverage Δ
ambari	85.75% <ø> (ø)
avi_vantage	92.50% <ø> (ø)
calico	83.33% <ø> (ø)
cilium	75.34% <ø> (+0.93%)	⬆️
ecs_fargate	80.23% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.