CH-144 Add 10 minute timeout to skaffold template

[condar-metacell]

Closes CH-144

Added a new flag to the deploy/helm/flags/install array of the skaffold template

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Unit tests added to the test_skaffold.py file in ch_cli_tools, any skaffold.yaml generated with harness-deployment should include a --timeout=10m flag in the deploy/helm/flags/install array.

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Sanity checks:

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• In this PR it is explicitly stated how to test the current change
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Breaking changes (select one):

• The present changes do not change the preexisting api in any way
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Possible deployment updates issues (select one):

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Test coverage (select one):

• Tests for the relevant cases are included in this pr
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Documentation (select one):

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Nice to have (if relevant):

• Screenshots of the changes
• Explanatory video/animated gif

[filippomc]

LGTM