udiskslinuxmdraid: Add uevent triggers

[tbzatek]

Trigger uevents sync on the raid devices and their members when available.
This appears to fix some random test failures.

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FAIL: test_md_raid_methods (__main__.MDRaid.test_md_raid_methods)
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Traceback (most recent call last):
  File "/home/tbzatek/devel/udisks/src/tests/integration-test", line 1855, in test_md_raid_methods
    self.assertIsNotNone(block)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^
AssertionError: unexpectedly None

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FAIL: test_delete (test_mdraid.RAID0TestCase.test_delete)
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Traceback (most recent call last):
  File "/home/tbzatek/devel/udisks/src/tests/dbus-tests/test_mdraid.py", line 278, in test_delete
    self.assertNotIn(path, objects.keys())
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '/org/freedesktop/UDisks2/mdraid/4967f324_24ce30d5_3b23f9cf_b7a2669d' unexpectedly found in dict_keys([dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/sdd'), dbus.ObjectPath('/org/freedesktop/UDisks2/drives/LIO_ORG_udisks_test_dis_5282611e_2e74_4019_8ca5_d8ceb09dfa15'), dbus.ObjectPath('/org/freedesktop/UDisks2/drives/LIO_ORG_udisks_test_dis_65541bbc_0ffc_42cb_b639_6ce91a818511'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/vda2'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/vda'), dbus.ObjectPath('/org/freedesktop/UDisks2/drives/LIO_ORG_udisks_test_dis_dd927109_b9e7_462c_b95a_ae7878623713'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/sdb'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/sde'), dbus.ObjectPath('/org/freedesktop/UDisks2/drives/VirtIO_Disk'), dbus.ObjectPath('/org/freedesktop/UDisks2/drives/LIO_ORG_udisks_test_dis_0604a813_ce79_45fa_a9ff_eaf82188594e'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/vda3'), dbus.ObjectPath('/org/freedesktop/UDisks2/Manager'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/sdc'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/vda1'), dbus.ObjectPath('/org/freedesktop/UDisks2/drives/QEMU_HARDDISK_QM00013'), dbus.ObjectPath('/org/freedesktop/UDisks2/mdraid/4967f324_24ce30d5_3b23f9cf_b7a2669d'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/zram0'), dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/sda')])

======================================================================
FAIL: test_add_remove_device (test_mdraid.RAID1TestCase.test_add_remove_device)
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Traceback (most recent call last):
  File "/home/tbzatek/devel/udisks/src/tests/dbus-tests/test_mdraid.py", line 346, in test_add_remove_device
    self.assertIsNone(member)
    ~~~~~~~~~~~~~~~~~^^^^^^^^
AssertionError: dbus.Struct((dbus.ObjectPath('/org/freedesktop/UDisks2/block_devices/sdc'), dbus.Int32(-1), dbus.Array([dbus.String('spare')], signature=dbus.Signature('s')), dbus.UInt64(0), dbus.Dictionary({}, signature=dbus.Signature('sv'))), signature=None) is not None

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[packit-as-a-service]

Cockpit tests failed for commit a6f17e4. @martinpitt, @jelly, @mvollmer please check.

[martinpitt]

@mvollmer This actually breaks something in TestStorageLvm2.testDegradation. Could you please have a look and check more closely what's wrong?

[tbzatek]

This may have changed the order D-Bus objects are (dis)appearing, interfaces are updated and signals sent. Depends on how sensitive your tests are. Hopefully the order didn't break other things.