gcm: fix lint and static checker errors

[mitthu]

Summary:
Fix the lint and static checker issues from D109949701.

Context: https://www.internalfb.com/diff/D109949701?dst_version_fbid=1571860291345639&transaction_fbid=1663089815395784

Differential Revision: D109996003

[github-actions]

CI Commands

The following CI workflows run automatically on every push and pull request:

Workflow	What it runs
GPU Cluster Monitoring Python CI	lint, tests, typecheck, format, deb build, pyoxidizer builds
Go packages CI	shelper tests, format, lint

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The following commands can be used by maintainers to trigger additional tests that require access to secrets:

Command	Description	Requires approval?
/metaci tests	Runs Meta internal integration tests (pytest)	Yes — a maintainer must trigger the command and approve the deployment request
/metaci integration tests	Same as above (alias)	Yes

Note: Only repository maintainers (OWNER association) can trigger /metaci commands. After commenting the command, a maintainer must also navigate to the Actions tab and approve the deployment to the graph-api-access environment before the jobs will run. See the approval guidelines for what to approve or reject.

[meta-codesync]

@mitthu has exported this pull request. If you are a Meta employee, you can view the originating Diff in D109996003.

[meta-codesync]

@mitthu has imported this pull request. If you are a Meta employee, you can view this in D109996003.