[CI] Update plan with new push attestation tests

Adding missing tests to the Packit CI tmt test plan.

Signed-off-by: Karel Srot <ksrot@redhat.com>

Author: kkaarreell

packit-ci.fmf

@@ -68,6 +68,9 @@
        - /functional/use-multiple-ima-sign-verification-keys
        - /functional/webhook-certificate-on-localhost
        - /functional/agent-registration-with-non-default-tpm-algorithms/.*
+       - /functional/push-attestation-on-localhost
+       - /functional/agent-resilience-and-reattestation/.*
+       - /functional/push-authentication-.*
        - /regression/cve-2023-38200
        - /regression/cve-2023-38201
        - /regression/CVE-2023-3674