Fix bash to enable plugins in the fixture in the integration tests

[javierdelapuente]

Overview

The code for enabling plugins in the integrations tests (just after deploying discourse) was not working.

The code has been updated (it is a bash command that runs a rake task in one of the units). Also an assert has been added, so if the command fails, the fixture fails.

Rationale

Juju Events Changes

Module Changes

Library Changes

Checklist

• [x] The charm style guide was applied
• [x] The contributing guide was applied
• [x] The changes are compliant with ISD054 - Manging Charm Complexity
• [x] The documentation is generated using src-docs
• [x] The documentation for charmhub is updated.
• [x] The PR is tagged with appropriate label (urgent, trivial, complex)

[github-actions[bot]]

Test coverage for c8476141f3d4f4fb03bfafac2eb3a7657171e2c1

Name              Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------
src/charm.py        321     27     78     12    90%   186, 194-195, 207, 335->343, 376->381, 393, 575-577, 582-583, 595-597, 602-603, 615-617, 640-642, 684->exit, 694->exit, 724-730, 756->exit, 770-771, 781->exit, 795
src/database.py      30      1      8      1    95%   56
-------------------------------------------------------------
TOTAL               351     28     86     13    91%

Static code analysis report

Run started:2024-05-02 10:26:20.065875

Test results:
    No issues identified.

Code scanned:
    Total lines of code: 2047
    Total lines skipped (#nosec): 3
    Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
    Total issues (by severity):
        Undefined: 0
        Low: 0
        Medium: 0
        High: 0
    Total issues (by confidence):
        Undefined: 0
        Low: 0
        Medium: 0
        High: 0
Files skipped (0):