Migrate GCP Billing input control to new control panel

[kush-elastic]

Urgency

• High

Activity Type

• Enhancement

What does this PR do?

• Manually migrate GCP Billing visualizations to the lens in the current Kibana version 8.3.0 itself.

• Statistics for GCP Billing Lens migration:

Migration stats

	Before Migration			After Migration
Dashboad Name	Lens	Visualization	Old control panel	Lens	Visualization	New input controls
Billing overview	4	0	1	4	0	1

Checklist

• I have added an entry to my package's changelog.yml file.
• I have verified that panels are populated with data.
• I have verified that panels are not distorted after being migrated to the lens.
• I have updated screenshots of the dashboard.
• I have verified that the data counts are matching and panel aggregations are the same as before.

Author's Checklist

• Migrated panels should be removed from visualization folder.
• Migrated visualizations are populating in Kibana version 8.7.1 itself.

Related issues

• Closes [O11y][GCP Billing] Lens Migration #7250

Notes

• Update Legacy metrics in GCP Billing overview dashboard
  [GCP Billing] Update Legacy metrics in GCP Billing overview dashboard #7252

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-08-04T06:51:02.946+0000

• Duration: 19 min 23 sec

Test stats 🧪

Test	Results
Failed	0
Passed	64
Skipped	0
Total	64

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (6/6)	💚
Files	100.0% (6/6)	💚 2.813
Classes	100.0% (6/6)	💚 2.813
Methods	87.826% (101/115)	👎 -4.378
Lines	96.0% (1464/1525)	👍 5.228
Conditionals	100.0% (0/0)	💚

[kcreddy]

LGTM

[rajvi-patel-22]

LGTM!

[elasticmachine]

Package gcp - 2.25.0 containing this change is available at https://epr.elastic.co/search?package=gcp