[8.19][Automation] Update versions (#9447)

* [8.19][Automation] Update versions

These files are used for picking the starting (pre-upgrade) or ending (post-upgrade) agent versions in upgrade integration tests.

The content is based on responses from https://www.elastic.co/api/product_versions and https://snapshots.elastic.co

The current update is generated based on the following requirements:

`.package-version`

```json
{
  "version": "8.19.1-SNAPSHOT",
  "build_id": "8.19.1-d8b1213e",
  "manifest_url": "https://snapshots.elastic.co/8.19.1-d8b1213e/manifest-8.19.1-SNAPSHOT.json",
  "summary_url": "https://snapshots.elastic.co/8.19.1-d8b1213e/summary-8.19.1-SNAPSHOT.html",
  "core_version": "8.19.1",
  "stack_build_id": "8.19.1-d8b1213e-SNAPSHOT"
}
```

`testing/integration/testdata/.upgrade-test-agent-versions.yml`

```json
{
  "UpgradeToVersion": "8.19.3",
  "CurrentMajors": 1,
  "PreviousMajors": 1,
  "PreviousMinors": 2,
  "SnapshotBranches": [
    "9.1",
    "9.0",
    "7.17"
  ]
}
```

* fix: stop elastic-agent service if we need to stop endpoint

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Panos Koutsovasilis <[email protected]>

Author: github-actions[bot]

dev-tools/packaging/templates/linux/preinstall.sh.tmpl

@@ -10,6 +10,13 @@ if systemctl list-unit-files --type=service | grep -q "^${SERVICE_NAME}.service"
 
     # Remove the vault directory if it exists
     if [ -d "/opt/Elastic/Endpoint/state/vault" ]; then
+        # we need to stop the agent to prevent it from invoking endpoint
+        if systemctl --quiet is-active elastic-agent; then
+          echo "elastic-agent is running, stopping it"
+          systemctl --quiet stop elastic-agent
+        else
+          echo "elastic-agent is not running"
+        fi
 
         # Check if the endpoint is running
         if systemctl --quiet is-active $SERVICE_NAME; then

testing/integration/testdata/.upgrade-test-agent-versions.yml

@@ -5,7 +5,7 @@
 # upgrade integration tests.
 
 testVersions:
-  - 8.18.4
-  - 8.17.9
+  - 8.18.5
+  - 8.17.10
   - 7.17.30-SNAPSHOT
   - 7.17.29