fix(scripts): force falco-driver-loader script to try to compile the driver anyway even on unsupported platforms

[FedeDP]

What type of PR is this?

/kind cleanup

Any specific area of the project related to this PR?

What this PR does / why we need it:

Currently, when falco-driver-loader is not able to fetch OS_NAME from multiple files under /etc, like /etc/os-release, it exit with an error. I think that the best approach is trying to compile the requested driver in any case; consider that TARGET_ID is only really used to concatenate the correct name for the driver on the s3 bucket. So, in case we are not able to fetch any TARGET_ID, just fallback at disabling ENABLE_DOWNLOAD and go on to compile the driver. This is mostly useful when using HOST_ROOT but the /etc/ folder is not a shared volume under it.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[poiana]

LGTM label has been added.

Git tree hash: 5a50819d5b1d1d97967a00532f64a7ec3999cac8

[leogr]

/milestone 0.33.0

[poiana]

LGTM label has been added.

Git tree hash: 554d3d4d92f388432ec27092586ad907aa477ef3

[FedeDP]

/milestone 0.34.0

[jasondellaluce]

/hold until Falco 0.33.0 is released

[FedeDP]

/unhold

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: FedeDP, jasondellaluce, leogr

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