[rsa2elk/juniper] Upgrade to ECS 8.0.0

[adriansr]

Automated PR.

Upgrades rsa2elk package to ECS 8.0.0.

Manually modified to include changes to juniper/srx (non-rsa2elk) from #2415

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[elasticmachine]

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Build stats

• Start Time: 2022-01-25T17:51:31.727+0000

• Duration: 26 min 56 sec

• Commit: 1926f50

Test stats 🧪

Test	Results
Failed	0
Passed	26
Skipped	0
Total	26

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