#1666: fixed integration-tests

[hohwille]

This PR fixes #1666

Implemented changes:

• reworked integration-tests
• update downloaded and extracted SNAPSHOT but ideasy binary on PATH was still old version since installation logic was wrong
• avoid spaming tmp folder
• avoid cloning urls every run if already available

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Checklist for this PR

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• When running mvn clean test locally all tests pass and build is successful
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[coveralls]

Pull Request Test Coverage Report for Build 21183447489

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 92 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 70.456%

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Files with Coverage Reduction	New Missed Lines	%
com/devonfw/tools/ide/io/FileAccessImpl.java	92	67.42%

Totals
Change from base Build 21181431671:	0.01%
Covered Lines:	10483
Relevant Lines:	14293

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💛 - Coveralls