Remove site url

[arturo-seijas]

Applicable spec:
N/A

Overview

Remove the site_url configuration option and configure the external hostname through the nginx-route relation.

Rationale

N/A

Juju Events Changes

N/A

Module Changes

charm.py

Library Changes

NA

Checklist

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

[alithethird]

@arturo-seijas what should we do with this one?

[github-actions]

Test results for commit 3f58153

Lint checks failed for 3f58153

```

--- /home/ubuntu/actions-runner/_work/indico-operator/indico-operator/src/charm.py:before 2025-05-26 07:00:37.810000
+++ /home/ubuntu/actions-runner/_work/indico-operator/indico-operator/src/charm.py:after 2025-05-26 07:01:02.784277
@@ -13,8 +13,8 @@
import charms.loki_k8s.v0.loki_push_api
import ops
from charms.grafana_k8s.v0.grafana_dashboard import GrafanaDashboardProvider
+from charms.loki_k8s.v0.loki_push_api import LogProxyConsumer
from charms.nginx_ingress_integrator.v0.nginx_route import NginxRouteRequirer, require_nginx_route
-from charms.loki_k8s.v0.loki_push_api import LogProxyConsumer
from charms.prometheus_k8s.v0.prometheus_scrape import MetricsEndpointProvider
from charms.redis_k8s.v0.redis import RedisRelationCharmEvents, RedisRequires
from ops.charm import ActionEvent, CharmBase, HookEvent, PebbleReadyEvent, RelationDepartedEvent

[github-actions]

Test results for commit 3f58153

Test coverage for 3f58153

Name                       Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------------------
src/charm.py                 330     12     74      8    95%   374, 388-389, 639, 676-677, 768->784, 770->779, 779->784, 792-793, 832, 865->exit, 903-909
src/database_observer.py      32      0      4      0   100%
src/s3_observer.py            17      0      0      0   100%
src/saml_observer.py          14      0      0      0   100%
src/smtp_observer.py          15      0      0      0   100%
src/state.py                  73      0      8      0   100%
----------------------------------------------------------------------
TOTAL                        481     12     86      8    96%
Coverage failure: total of 96 is less than fail-under=97

Static code analysis report

Run started:2025-05-26 07:01:10.300400

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 3064
  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):