hydra-eval-jobset: Pass --no-allow-import-from-derivation

Dependencies

• [2] ZPHREC7X hydra-eval-jobset: Support flakes
• [*] N22GPKYT * Put info about logs / build products in the DB.
• [*] VU2OLHD2 Move most of AddBuilds to hydra-eval-jobset

Change contents

• edit in src/script/hydra-eval-jobset at line 350
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  +

  + push @cmd, "--no-allow-import-from-derivation";