feat(userspace/falco): print version at startup

[leogr]

What type of PR is this?

/kind feature

Any specific area of the project related to this PR?

/area engine

What this PR does / why we need it:

See #1302

Which issue(s) this PR fixes:

Fixes #1302

Special notes for your reviewer:

/milestone 0.24.0
/cc @fntlnz
/cc @leodido
/cc @kris-nova

Does this PR introduce a user-facing change?:

new(userspace/falco): print the Falco and driver versions at the very beginning of the output.

[leodido]

SGTM!

Anyway, I have a question.

Why do not stick with the usual two-line version (line 626-627) logs we use for the --version flag in order to be more consistent?

There's a particular reason to print Falco version and driver version this way when Falco runs?

[leogr]

SGTM!

Anyway, I have a question.

Why do not stick with the usual two-line version (line 626-627) logs we use for the --version flag in order to be more consistent?

There's a particular reason to print Falco version and driver version this way when Falco runs?

Lines 626-627 uses printf, here I use the initialized logger. Moreover, I have found just one-line output briefer.
No other reasons.
Let me know if you prefer a two-line, and I will change it shortly.

[leodido]

I don't have particular preferences honestly.

I was just asking if there was a ratio behind putting both versions on the same line. That's all!

[poiana]

LGTM label has been added.

Git tree hash: b0db7668fb16d54f0db4053d64d0e429d0647fc0

[leodido]

Moving this to next release because it hasn't reached 2 approvals

/milestone 0.25.0

[leodido]

/hold

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fntlnz, leodido

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[fntlnz]

Approved, I think we can get this in now!

[leodido]

/hold cancel