Redis connection fix

[qem19]

Laravel doesnt have ability to use different redis-clients for different connections. It can be problem if you want to use sentinel-connection for app and phpredis for metrics.

So, in the PR i changed redis config for Prometheus. Now, you can specify redis-client and all credentials right in event-tracker.php config

[coveralls]

Pull Request Test Coverage Report for Build 5749179287

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 3 (0.0%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.8%) to 46.352%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/Repositories/PrometheusRepository/Installer.php	0	3	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/Repositories/PrometheusRepository/Installer.php	5	40.0%

Totals
Change from base Build 4436525562:	-0.8%
Covered Lines:	108
Relevant Lines:	233

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💛 - Coveralls