Greetings again Store team 
Could I please have a guardrail created for the Lustre Server charm? The guardrail pattern is \d+\.\d+(-lts)?. The optional -lts capture group is for any long term tracks of Lustre that we’ll be supporting in the future.
Example tracks include:
2.17/{stable,candidate,beta,edge}2.18/{stable,candidate,beta,edge}
Lustre versions are often not compatible between minor releases, so that’s why we need a dedicated track for each minor release.
Please let me know if yinz have any questions!