[exporter/syslog] Add integration tests

[kasia-kujawa]

Component(s)

exporter/syslog

Describe the issue you're reporting

Integration tests for syslog exporter need to be added.

Issue related to review comment: #19647 (review) and it is necessary to be completed to move exporter from development to alpha.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• exporter/syslog: @kkujawa-sumo @rnishtala-sumo @astencel-sumo

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[kasia-kujawa]

This still needs to be done, I'm going to work on this.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• exporter/syslog: @kkujawa-sumo @rnishtala-sumo @astencel-sumo

See Adding Labels via Comments if you do not have permissions to add labels yourself.