Fix issue in logic of modsec template

[MMeent]

according to go templates: (and ((not false) false)) == true

the only way to remove the owasp rules from every location is to disable modsec on that location, or to enable owasp globally, both not-so-great choices.

This commit fixes the logic issue by fixing the and-clause in the if-statement. As a result this reduces global resource usages when modsecurity is configured globally, but not on every location.

What this PR does / why we need it:
The current logic in the template dictates that when you enable modsecurity globally, you either also enable the owasp rule sets globally, or the owasp rulesets are rendered into each location, increasing memory usage per-location without a way to turn this off.

Which issue this PR fixes fixes #4629

Special notes for your reviewer: If possible, please backport to 0.26.x

[k8s-ci-robot]

Hi @MMeent. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[aledbf]

/ok-to-test

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[aledbf]

/lgtm

@MMeent thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, MMeent

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[aledbf]

/retest