test(server/v2): Add system-test for store's command (#21357)

Co-authored-by: Alexander Peters <alpe@users.noreply.github.com>
(cherry picked from commit ef8e2d4)

# Conflicts:
#	store/snapshots/manager.go
#	store/v2/snapshots/manager.go
#	tests/systemtests/system.go

Author: hieuvubk