Disable line wrapping of base64 output

[stigok]

Use base64 with line wrapping disabled to avoid unexpected errors when encoding long values.

If you are encoding a string with base64 that will result in a string longer than 76 chars, the YAML parser will hopefully throw errors at you stating an invalid format.

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[adisky]

@stigok your cncf-cla check is failing, Please sign it or resolve it as mentioned above

[stigok]

I signed it

[tengqm]

Good tips.
/lgtm
/approve

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