[O11y][Airflow] Add system tests for the integration package

[aliabbas-elastic]

Proposed commit message

• Added system tests for Airflow integration using the observability/stream image
• Updated the Kibana version to 8.11.0 as per comment

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

How to test this PR locally

1. elastic-package check
2. elastic-package stack up -d -v
3. elastic-package test -v

Related issues

• Closes [Airflow] create system test cases for the statsD data stream #6282

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• Start Time: 2023-11-28T13:07:21.743+0000

• Duration: 16 min 27 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4
Skipped	0
Total	4

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (0/0)	💚
Files	100.0% (0/0)	💚
Classes	100.0% (0/0)	💚
Methods	75.0% (3/4)	👎 -18.75
Lines	100.0% (0/0)	💚
Conditionals	100.0% (0/0)	💚

[ritalwar]

I suggest upgrading the Kibana version to 8.11 to align with the modifications in the statsd module implementation in Beats, which are available in version 8.11. Subsequently, we should execute the tests based on the correct implementation.
@lalit-satapathy @SubhrataK

[aliabbas-elastic]

I suggest upgrading the Kibana version to 8.11 to align with the modifications in the statsd module implementation in elastic/beats#36925, which are available in version 8.11. Subsequently, we should execute the tests based on the correct implementation.

Sure Let me update it accordingly

[ritalwar]

LGTM!

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Package airflow - 0.6.0 containing this change is available at https://epr.elastic.co/search?package=airflow