#727: allow fallback to edition independent dependencies.json

[hohwille]

fixes #727

• allow fallback to edition independent dependencies.json
• added test since there was no test for this
• improve test-infrastructure

[coveralls]

Pull Request Test Coverage Report for Build 11595623753

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 87 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.03%) to 66.746%

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Files with Coverage Reduction	New Missed Lines	%
com/devonfw/tools/ide/tool/LocalToolCommandlet.java	2	86.19%
com/devonfw/tools/ide/url/model/file/json/ToolDependencies.java	4	78.38%
com/devonfw/tools/ide/url/model/folder/UrlEdition.java	7	20.0%
com/devonfw/tools/ide/context/AbstractIdeContext.java	74	60.0%

Totals
Change from base Build 11580911301:	0.03%
Covered Lines:	6290
Relevant Lines:	9081

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💛 - Coveralls

[hohwille]

I dont want to block this PR further since all is ready and quite obvious.
Team review feedback is still welcome even after merge and I can create a follow up PR if required...