FreeNAS/freenas ca30d6agui/freeadmin/templatetags freeadmin.py, gui/middleware notifier.py

Merge pull request #2256 from freenas/FIX-63717

tkt-63717: TrueNAS middleware plugin for Enclosure
DeltaFile
+11-15gui/storage/forms.py
+19-0src/middlewared/middlewared/plugins/zfs.py
+9-6src/middlewared/middlewared/plugins/disk.py
+5-0gui/freeadmin/templatetags/freeadmin.py
+0-3gui/middleware/notifier.py
+1-1src/freenas/etc/ix.rc.d/ix-syncmultipaths
+1-1src/middlewared/middlewared/alert/source/volume_status.py
+46-267 files

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