[8.0](backport #1984) Update fetchBeatsBinary to be reused in elastic-agent-poc

[mergify]

This is an automatic backport of pull request #1984 done by Mergify.

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[elasticmachine]

💔 Tests Failed

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Build stats

• Start Time: 2022-01-17T19:20:56.826+0000

• Duration: 62 min 59 sec

• Commit: dbf699a

Test stats 🧪

Test	Results
Failed	2
Passed	209
Skipped	0
Total	211

Test errors

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Initializing / End-To-End Tests / fleet_elastic_pkg_apm_server / [empty] – TEST-x86_64-fleet-480b44b8-2022-01-17-19:40:12.xml

• no error details
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 Test report file /var/lib/jenkins/workspace/PR-2009-1-696804c1-3552-48c5-bf8c-d2527f6a2524/outputs/3.143.245.109/TEST-x86_64-fleet-480b44b8-2022-01-17-19:40:12.xml was length 0 

Initializing / End-To-End Tests / kubernetes_autodiscover_elastic-agent / [empty] – TEST-x86_64-kubernetes-autodiscover-ed6c7863-2022-01-17-19:40:11.xml

• no error details
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 Test report file /var/lib/jenkins/workspace/PR-2009-1-f72074fb-1a2b-4324-b947-dd46c659f642/outputs/13.59.151.110/TEST-x86_64-kubernetes-autodiscover-ed6c7863-2022-01-17-19:40:11.xml was length 0 

Steps errors

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Shell Script

• Took 2 min 7 sec . View more details here
• Description: ssh -tt -o TCPKeepAlive=yes -o ServerAliveInterval=60 -o ServerAliveCountMax=10 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i /var/lib/jenkins/workspace/PR-2009-1-696804c1-3552-48c5-bf8c-d2527f6a2524/e2essh [email protected] -- 'sudo bash /home/admin/e2e-testing/.ci/scripts/functional-test.sh "apm_server && ~@nightly && ~@skip:amd64" '

Archive the artifacts

• Took 0 min 0 sec . View more details here
• Description: [2022-01-17T19:42:26.653Z] Archiving artifacts script returned exit code 2

🐛 Flaky test report

❕ There are test failures but not known flaky tests.

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Genuine test errors

💔 There are test failures but not known flaky tests, most likely a genuine test failure.

• Name: Initializing / End-To-End Tests / fleet_elastic_pkg_apm_server / [empty] – TEST-x86_64-fleet-480b44b8-2022-01-17-19:40:12.xml
• Name: Initializing / End-To-End Tests / kubernetes_autodiscover_elastic-agent / [empty] – TEST-x86_64-kubernetes-autodiscover-ed6c7863-2022-01-17-19:40:11.xml

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