[gen][puppet] fix sort order for cluster with number in name
bug 14950 nouvelle occurence d'un tri corrigé pour les clusters avec des chiffres.
Cela corrigera l'affichage de https://www.grid5000.fr/w/OAR_Syntax_simplification#Clusters_and_nodes
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bug 14950 nouvelle occurence d'un tri corrigé pour les clusters avec des chiffres.
Cela corrigera l'affichage de https://www.grid5000.fr/w/OAR_Syntax_simplification#Clusters_and_nodes