[pulls_and_impacts] add option to automatically retry failed fits

Hi @mrieger ,

this PR adds an option to automatically retry failed fits with '--X-rtd MINIMIZER_no_analytic' for PullsAndImpacts.

Best, Peter

requested review from @mrieger

assigned to @mrieger and @mfackeld

added 154 commits

• 5285c39d...d64a2fa0 - 153 commits from branch master
• 437a58fa - Merge branch 'master' into feat/pulls__retry_no_analytic.

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added 1 commit

• 4e9aae4d - Add generalized mechanism for fallback commands.

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added 2 commits

• 1e0d4c55 - 1 commit from branch master
• 9e1d4d34 - Merge branch 'master' into feat/pulls__retry_no_analytic.

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Good idea!

I generalized the fallback mechanism to all CommandTasks and added the new option to the documentation

approved this merge request

added 1 commit

• 1a3e775a - Allow additional CI parameters.

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added 12 commits

• 1a3e775a...ef3c5d8a - 11 commits from branch master
• 662c8329 - Merge branch 'master' into 'feat/pulls__retry_no_analytic'

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approved this merge request

mentioned in commit 72412e58

merged