Improve testing speed

Improves testing speed by ~x3 (from ~3 min to ~1 min on my machine, parallel 12 threads):

• Load big 'router-info.json' only once, instead keep one non-mutating dict for all tests
• mock out ncc client to prevent trying to connect
• do not setup logging in tests (mostly for not creating error.log and info.log files)
• some more minor changes...

added 1 commit

• 873bb685 - revert changes to gitignore

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added 19 commits

• 873bb685...6595ae2e - 18 commits from branch develop
• 0143a5b4 - Merge branch 'develop' of...

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added 3 commits

• 0143a5b4...2eccf287 - 2 commits from branch develop
• 7b1edbd4 - Merge branch 'develop' of...

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added 2 commits

• e059a01c - 1 commit from branch develop
• 946ad84c - Merge branch 'develop' of...

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approved this merge request

Looks good to me but I'd get Bjarke or Robert to give it a look just to be safe.

requested review from @bjarke

mentioned in commit 696fcebb

merged