fixstates skip IStateMachine::BACKENDSTORAGE for delete

[matidau]

Released under the GNU Affero General Public License (AGPL), version 3

What does this implement/fix? Explain your changes.

z-push-admin fixstates was deleting states of type IStateMachine::BACKENDSTORAGE as it doesn't store with a uuid

Does this close any currently open issues?

It might solve #92

Any relevant logs, error output, etc?

11:08:26 Checking for unreferenced (obsolete) state files: Processed: 1123 - Deleted: 7

[matidau]

@eberproducts & @smartperson
If either of you could test this PR and let me know if it makes a difference when running fixstates, it would be appreciated.

[smartperson]

👍 I think this works. I tried a few times. When I run sudo z-push-admin -a fixstates without the patch, it breaks the accounts on my devices. When I run sudo z-push-admin -a fixstates with the patch, the accounts continue to receive email.

When run without the PR:

Validating and fixing states (this can take some time):
        13:29:13 Checking username casings: Processed: 1 - Converted: 0 - Removed: 0
        13:29:13 Checking available devicedata & user linking: Processed: 1 - Fixed: 0
        13:29:13 Checking for unreferenced (obsolete) state files: Processed: 21 - Deleted: 1
        13:29:13 Checking for hierarchy folder data state: Devices: 1 - Processed: 1 - Fixed: 0 - Device+User without hierarchy: 0
        13:29:13 Checking flags of shared folders: Devices: 1 - Devices with additional folders: 0 - Fixed: 0

When run with the PR, after having added another d eivce to my account, as well:

Validating and fixing states (this can take some time):
        13:50:20 Checking username casings: Processed: 2 - Converted: 0 - Removed: 0
        13:50:20 Checking available devicedata & user linking: Processed: 2 - Fixed: 0
        13:50:20 Checking for unreferenced (obsolete) state files: Processed: 37 - Deleted: 0
        13:50:20 Checking for hierarchy folder data state: Devices: 2 - Processed: 2 - Fixed: 0 - Device+User without hierarchy: 0
        13:50:20 Checking flags of shared folders: Devices: 2 - Devices with additional folders: 0 - Fixed: 0