Add GCS input to Cloudflare Logpush

[ShourieG]

Type of change

• Enhancement

What does this PR do?

Adds support for GCS input to the Cloudflare Logpush package.

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.

Related issues

• Relates [GCS Input] Add GCS to Cloudflare and Akamai #4291

Screenshots

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Build stats

• Start Time: 2022-11-30T09:34:56.588+0000

• Duration: 19 min 21 sec

Test stats 🧪

Test	Results
Failed	0
Passed	44
Skipped	0
Total	44

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (7/7)	💚
Files	100.0% (7/7)	💚
Classes	100.0% (7/7)	💚
Methods	100.0% (89/89)	💚
Lines	94.37% (2380/2522)	👎 -1.902
Conditionals	100.0% (0/0)	💚

[ShourieG]

@efd6 have updated the PR

[efd6]

LGTM after minor change.

[jamiehynds]

Thanks @ShourieG - a few users waiting on this one and very excited to start testing out GCS with Logpush.

[elasticmachine]

Package cloudflare_logpush - 0.4.0 containing this change is available at https://epr.elastic.co/search?package=cloudflare_logpush