Fix missing config-migrator in neo4j-desktop

[spacecowboy]

Tree of mac installer (I am removing the Windows scripts from mac installer in #7501)

neo4j-ce/Neo4j Community Edition 3.0.4-SNAPSHOT.app/Contents
├── firstrun
├── Info.plist
├── MacOS
│   └── JavaApplicationStub
├── PkgInfo
└── Resources
    ├── app
    │   ├── bin
    │   │   ├── install.properties
    │   │   ├── neo4j-community.vmoptions
    │   │   ├── neo4j-desktop-3.0.4-SNAPSHOT.jar
    │   │   ├── neo4j-import
    │   │   ├── Neo4j-Management
    │   │   │   ├── Get-Java.ps1
    │   │   │   ├── Get-KeyValuePairsFromConfFile.ps1
    │   │   │   ├── Get-Neo4jEnv.ps1
    │   │   │   ├── Get-Neo4jServer.ps1
    │   │   │   ├── Get-Neo4jSetting.ps1
    │   │   │   ├── Get-Neo4jStatus.ps1
    │   │   │   ├── Get-Neo4jWindowsServiceName.ps1
    │   │   │   ├── Install-Neo4jServer.ps1
    │   │   │   ├── Invoke-Neo4jAdmin_Import.ps1
    │   │   │   ├── Invoke-Neo4jAdmin.ps1
    │   │   │   ├── Invoke-Neo4jBackup.ps1
    │   │   │   ├── Invoke-Neo4jImport.ps1
    │   │   │   ├── Invoke-Neo4j.ps1
    │   │   │   ├── Invoke-Neo4jShell.ps1
    │   │   │   ├── Invoke-Neo4jUtility.ps1
    │   │   │   ├── Neo4j-Management.psm1
    │   │   │   ├── Start-Neo4jServer.ps1
    │   │   │   ├── Stop-Neo4jServer.ps1
    │   │   │   └── Uninstall-Neo4jServer.ps1
    │   │   ├── Neo4j-Management.psd1
    │   │   ├── neo4j-shell
    │   │   └── tools
    │   │       └── config-migrator.jar
    │   ├── LICENSES.txt
    │   ├── LICENSE.txt
    │   ├── NOTICE.txt
    │   └── plugins
    │       └── README.txt
    ├── app.icns
    ├── i4jlauncher.config
    └── jre.bundle

Tree of windows installation result:

/home/jonas/.wine/drive_c/Program Files (x86)/Neo4j CE 3.0.4-SNAPSHOT/
├── bin
│   ├── install.properties
│   ├── neo4j-ce.exe
│   ├── neo4j-community.vmoptions
│   ├── neo4j-desktop-3.0.4-SNAPSHOT.jar
│   └── tools
│       └── config-migrator.jar
├── LICENSES.txt
├── LICENSE.txt
├── NOTICE.txt
├── plugins
│   └── README.txt
└── uninstall.exe

[spacecowboy]

@pgpv since you are looking at installers, might having a look at this pr?

[benbc]

@spacecowboy This looks good to me.