[PR #7517/8d886b42 backport][stable-7] Close elastic APM client to release connections

[patchback]

This is a backport of PR #7517 as merged into main (8d886b4).

SUMMARY

Close elastic-apm client to not leak urllib3 connections.

Fix #7518 and is related to elastic/apm-agent-python#1912

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ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

community.general.plugins.callback.elastic

ADDITIONAL INFORMATION

Running anything with elastic source can cause a Closing the transport connection timed out., because elastic client is not closed.

A small example can trigger the issue.

from ansible_collections.community.general.plugins.callback.elastic import ElasticSource

source = ElasticSource("")
apm_cli = source.init_apm_client("http://localhost:8200", "service", None, None, None)
# Uncomment line below to fix the warning
# apm_cli.close()

$ python -Wd unclosed.py
sys:1: ResourceWarning: unclosed <socket.socket fd=3, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=6, laddr=('127.0.0.1', 38722), raddr=('127.0.0.1', 8200)>
ResourceWarning: Enable tracemalloc to get the object allocation traceback
# Uncomment apm_cli.close()
$ python -Wd closed.py

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