adds tolerations, nodeSelector, and affinity to ctlog.

Partly resolves https://github.com/sigstore/helm-charts/issues/696

Description of the change

Adds tolerations, nodeSelector and affinity to charts.

Existing or Associated Issue(s)

Request for tolerations, nodeSelector and affinity to be allowed to configure for all charts

Additional Information

initial PR w/ all changes in one.

Checklist

[x] Chart version bumped in Chart.yaml according to semver. Where applicable, update and bump the versions in any associated umbrella chart
[x] Variables are documented in the values.yaml and added to the README.md. The helm-docs utility can be used to generate the necessary content. Use helm-docs --dry-run to preview the content.
[x] JSON Schema generated.
[x] List tests pass for Chart using the Chart Testing tool and the ct lint command.
```
❯ ct lint --config ct.yaml
Linting charts...
```

Charts to be processed:

ctlog => (version: "0.2.53", path: "charts/ctlog")

"sigstore" already exists with the same configuration, skipping Linting chart "ctlog => (version: \"0.2.53\", path: \"charts/ctlog\")" Checking chart "ctlog => (version: \"0.2.53\", path: \"charts/ctlog\")" for a version bump... Old chart version: 0.2.52 New chart version: 0.2.53 Chart version ok. Validating /Users/x308080/Projects/helmcharts-2/charts/ctlog/Chart.yaml... Validation success! 👍 ==> Linting charts/ctlog [INFO] Chart.yaml: icon is recommended

1 chart(s) linted, 0 chart(s) failed

✔︎ ctlog => (version: "0.2.53", path: "charts/ctlog")

All charts linted successfully

sigstore / helm-charts