cubicweb #17069749 cwctl upgrade: DO clean static-datadir if verbosity is 0 [validation pending]

When verbosity is 0 (used in automated deployment), we DO want the static data dir to be fully regenerated, thus the existing data dir to be deleted

priorityimportant
typebug
done in3.25.2
load left0.000
closed by#43022c1fa133 [cwctl] upgrade: do delete the static data dir if verbosity is 0 (closes #17069749)
patch[cwctl] upgrade: do delete the static data dir if verbosity is 0 (closes #17069749) [in-progress]