[bfss] new storage_changed migration action to move an attribute to a custom storage. Closes #893941
"""%(distname)s postcreate script, executed at instance creation time or when
the cube is added to an existing instance.
You could setup site properties or a workflow here for example.
:organization: %(author)s
:copyright: %(year)s %(author)s
:contact: %(author-web-site)s -- mailto:%(author-email)s
:license: %(long-license)s
"""
# Example of site property change
#set_property('ui.site-title', "<sitename>")