IMP-171: Add route blacklist check

[coveralls]

Pull Request Test Coverage Report for Build 8323371355

Details

• 44 of 51 (86.27%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 89.816%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
apps/hellgate/src/hg_inspector.erl	8	9	88.89%
apps/routing/src/hg_routing.erl	18	19	94.74%
apps/routing/src/hg_routing_explanation.erl	2	7	28.57%
<!--	Total:	44	51	86.27%	-->

Totals
Change from base Build 7915753565:	0.1%
Covered Lines:	4630
Relevant Lines:	5155

---

💛 - Coveralls

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 86.27451% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 89.81%. Comparing base (578bbc8) to head (eaa8c88).

Files	Patch %	Lines
apps/routing/src/hg_routing_explanation.erl	28.57%	5 Missing :warning:
apps/hellgate/src/hg_inspector.erl	88.88%	1 Missing :warning:
apps/routing/src/hg_routing.erl	94.73%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #119 +/- ## ========================================== + Coverage 89.69% 89.81% +0.12% ========================================== Files 57 57 Lines 5114 5155 +41 ========================================== + Hits 4587 4630 +43 + Misses 527 525 -2 ```

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