Merge ~mertkirpici/charm-prometheus-blackbox-exporter:bseng/553 into charm-prometheus-blackbox-exporter:master

[Mert Kirpici]

Drop bionic support

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

This merge proposal is being monitored by mergebot. Change the status to Approved to merge.

[🤖 prod-jenkaas-bootstack (prod-jenkaas-bootstack)]

PASSED: Continuous integration, rev:135d90495f1feb0dd8c69df3fb357274e42717a3
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-blackbox-exporter-ci/1/
Executed test runs:
    SUCCESS: https://jenkins.canonical.com/bootstack/job/lp-charm-test-functest/1334/
    None: https://jenkins.canonical.com/bootstack/job/lp-update-mp/1663/

Click here to trigger a rebuild:
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-blackbox-exporter-ci/1//rebuild

review: Approve (continuous-integration)

[Erhan Sunar (esunar)]

LGTM

review: Approve

[Tianqi Xiao (txiao)]

review: Approve

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

Change successfully merged at revision 582507661f62e4032980d5e4917ab12c7d056ef8

diff --git a/charmcraft.yaml b/charmcraft.yaml
index 7e84403..7187921 100644
--- a/charmcraft.yaml
+++ b/charmcraft.yaml
@@ -18,7 +18,3 @@ bases:
           channel: "20.04"
           architectures:
               - amd64
-        - name: ubuntu
-          channel: "18.04"
-          architectures:
-              - amd64
diff --git a/src/tests/functional/tests/bundles/bionic.yaml b/src/tests/functional/tests/bundles/bionic.yaml
deleted file mode 120000
index f81f6ff..0000000
--- a/src/tests/functional/tests/bundles/bionic.yaml
+++ /dev/null
@@ -1 +0,0 @@
-base.yaml
\ No newline at end of file
diff --git a/src/tests/functional/tests/bundles/overlays/bionic.yaml.j2 b/src/tests/functional/tests/bundles/overlays/bionic.yaml.j2
deleted file mode 100644
index 65b2826..0000000
--- a/src/tests/functional/tests/bundles/overlays/bionic.yaml.j2
+++ /dev/null
@@ -1 +0,0 @@
-series: bionic
diff --git a/src/tests/functional/tests/tests.yaml b/src/tests/functional/tests/tests.yaml
index bbb8e8b..8af72b8 100644
--- a/src/tests/functional/tests/tests.yaml
+++ b/src/tests/functional/tests/tests.yaml
@@ -2,7 +2,6 @@ charm_name: prometheus-blackbox-exporter
 gate_bundles:
   - jammy
   - focal
-  - bionic
 smoke_bundles:
   - jammy
 dev_bundles:
@@ -12,4 +11,4 @@ tests:
 target_deploy_status:
   nrpe:
     workload-status: blocked
-    workload-status-message: Nagios server not configured or related
+    workload-status-message-prefix: Nagios server not configured or related