chore(node): export cpu microcode metrics #3787
Merged
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NODE-1567
CPU microcode version now exported as a metric:
![# HELP node_cpu_microcode CPU microcode version](https://private-user-images.githubusercontent.com/113942931/410075366-f1a0825a-99de-4c72-bd74-f8a17d326d05.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MzkzOTc1NTcsIm5iZiI6MTczOTM5NzI1NywicGF0aCI6Ii8xMTM5NDI5MzEvNDEwMDc1MzY2LWYxYTA4MjVhLTk5ZGUtNGM3Mi1iZDc0LWY4YTE3ZDMyNmQwNS5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMjEyJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDIxMlQyMTU0MTdaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1mZTQ2MDFlOGNiNzM0YWMzNGVjY2ZmYWQ5NzIwYWJjZWZkMDljYjhmN2UxNTEyYmQ2ZTk1ODk0MmI1ZTcyNGRkJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.vlrX7Yk0LO19sgnsJb9JJLWNgsjCJ7GrdthYj3xQL4w)