[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

added 2 commits

• 194a9d33 - 1 commit from branch master
• 6a5cd16c - [gen][puppet] fix sort order for cluster with number in name

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mentioned in commit 624ccf59