cubicweb-vcsfile #2827080 Repository.localcachepath should consider .path [validation pending]

Since we firmly assume the .local_cache and .path attributes are mutually exclusive, the .localcachepath property should just use either one.

prioritynormal
typebug
done in1.13.3
load0.100
load left0.000
closed by#50f6876642b4 [entities] localcachepath should take .path if used (closes #2827080)
patch[entities] localcachepath should take .path if used (closes #2827080) [applied]