Upgrade all manifests to v1 manifest format

manifests/v/VMware/HorizonClient/5.4.2/VMware.HorizonClient.yaml

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+PackageIdentifier: VMware.HorizonClient
+PackageName: VMware Horizon Client
+Moniker: vmware-horizonclient
+PackageVersion: 5.4.2
+Publisher: VMware
+Author: VMware
+License: © 2020 VMware, Inc
+LicenseUrl: https://www.vmware.com/download/eula/universal_eula.html
+ShortDescription: VMware Horizon Client for Windows makes it easy to access your remote desktops and published applications with the best possible user experience on the Local Area Network (LAN) or across a Wide Area Network (WAN).
+PackageUrl: https://www.vmware.com/products/horizon.html
+Tags:
+- vm
+- vmware
+- horizon
+- view
+MinimumOSVersion: 6.1.7600.0
+InstallerType: exe
+Installers:
+- Architecture: x86
+  InstallerUrl: https://download3.vmware.com/software/view/viewclients/CART21FQ1/VMware-Horizon-Client-5.4.2-15936851.exe
+  InstallerSha256: f1e064ca366be5356800a06c648f4b16c298b33f06e47c2f7ef7d33715dc2176
+  InstallerSwitches:
+    Custom: /norestart
+    Silent: /s /norestart
+    SilentWithProgress: /s /norestart
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0