Enhance Prometheus Metrics to include Challanege Categories & Juice Shop Version

[J12934]

Version Metric

Adds an additional metric juiceshop_version_info which the current running version number (from package.json). This metric has the same structure as the already existing nodejs_version_info metric.

juiceshop_version_info{version="10.2.1",mayor="10",minor="2",patch="1",app="juiceshop"} 1

Challenge Categories

Breaking down metrics juiceshop_challenges_solved & juiceshop_challenges_total by both their difficulties and categories. This lets dashboards add some more context to the users progress.

Before:

juiceshop_challenges_solved{difficulty="1",app="juiceshop"} 0
... 4 skipped lines
juiceshop_challenges_solved{difficulty="6",app="juiceshop"} 0

juiceshop_challenges_total{difficulty="1",app="juiceshop"} 11
... 4 skipped lines
juiceshop_challenges_total{difficulty="6",app="juiceshop"} 11

After:

juiceshop_challenges_solved{difficulty="3",category="XSS",app="juiceshop"} 0
... 48 skipped lines
juiceshop_challenges_solved{difficulty="5",category="Security Misconfiguration",app="juiceshop"} 0

juiceshop_challenges_total{difficulty="3",category="XSS",app="juiceshop"} 2
... 48 skipped lines
juiceshop_challenges_total{difficulty="5",category="Security Misconfiguration",app="juiceshop"} 1

[codeclimate]

Code Climate has analyzed commit 389a79f and detected 2 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Complexity	2

The test coverage on the diff in this pull request is 100.0% (80% is the threshold).

This pull request will bring the total coverage in the repository to 85.3% (0.0% change).

View more on Code Climate.

[bkimminich]

Ah damn, merged to soon. The related integration test fails currently.

[J12934]

Wait really? I checked and updated these locally and they passed.
Will look into it.

Apparently already fixed, sorry 😐

[bkimminich]

I fixed it, the -SNAPSHOT on the dev branch failed the regex in the test.