feat: add reloader scenario tests

[Azhovan]

What problem does this PR solve?:
This PR adds "reloader" application test scenario.
An application test scenario defines the behavior of an application specific test .

Which issue(s) does this PR fix?:
https://d2iq.atlassian.net/browse/D2IQ-98659

Special notes for your reviewer:
Requires: #1669

Does this PR introduce a user-facing change?:

Checklist

• If the PR adds a version bump, ensure there is no breaking change in Licensing model (or NA).
• If a chart is changed or app configuration is significantly changed, the chart version is correctly incremented (so that apps are not automatically upgraded from a previous version of DKP).

[d2iq-mergebot]

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@d2iq-mergebot test all
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[coveralls]

Pull Request Test Coverage Report for Build 6551313160

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 79.532%

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Totals
Change from base Build 6508891200:	0.0%
Covered Lines:	136
Relevant Lines:	171

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💛 - Coveralls

[github-actions]

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