less verbose Nokia output

Nokia router provisioning is much less verbose, and the diff is an actual diff (no more before and after).

Example here: http://192.168.200.24:3000/processes/580938e5-4095-4dd8-8567-69c38cc7d721

requested review from @simone.spinelli

added 1 commit

• 3c0c6a67 - Update requirements, fine-tune Vale

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added 7 commits

• 3c0c6a67...29003b99 - 3 commits from branch develop
• ffbccc7f - add redundant key, change handling of Nokia config diff
• 7efb36eb - parse Nokia config diff, update requirements.txt
• 71de4969 - Split off parsing of playbook output to a separate method
• 8dc91af8 - Update requirements, fine-tune Vale

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enabled an automatic merge when the pipeline for 8dc91af8 succeeds

merged