levant: fix infinite loop with sleep

[pmcatominey]

evaluationInspector only fetched the evaluation from the API once
as the call was outside of the loop

[pmcatominey]

I'm still testing this, but it's a pretty simple fix

[jrasell]

Thanks @pmcatominey; once the tests have completed I will get this in.

[pmcatominey]

Rebuilt from our fork and tested a deployment, no changes were made as part of the deployment but was enough to show the evaluation inspector is running.

[INFO] levant/command: running canary-auto-update of 60s
[INFO] levant/deploy: using dynamic count 2 for job xxxxxx and group xxxxxx
[INFO] levant/deploy: using dynamic count 1 for job xxxxxx and group xxxxxx
[INFO] levant/deploy: using dynamic count 1 for job xxxxxx and group xxxxxx
[INFO] levant/deploy: using dynamic count 1 for job xxxxxx and group xxxxxx
[INFO] levant/deploy: triggering a deployment of job xxxxxx
[INFO] levant/deploy: evaluation ff35264f-5a68-0b01-0ec6-20e721e14447 finished successfully
[INFO] levant/deploy: deployment e50d8778-adee-b1e2-eb8a-19d23c3bca07 has completed successfully
[INFO] levant/command: deployment of job xxxxxx successful