Add support CentOS Stream 9

[mardygalimov]

Hi!
Please add support for CentOS Stream 9.
Thank you and good luck.

[mardygalimov]

up :)

[greatflyingsteve]

We're currently using this module on CentOS Stream 9, with only my changes over in #29. It should be okay to use without those changes if your tuned profiles don't use space-containing values outside the [sysctl] section.

[duritong]

This was merged here: #24

[mardygalimov]

For some reason I didn't receive notifications about activity here.
Thank you!