Upgrade all manifests to v1 manifest format

manifests/m/Microsoft/Ironpython2/2.7.10/Microsoft.Ironpython2.yaml

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+PackageIdentifier: Microsoft.Ironpython2
+PackageName: Ironpython 2
+PackageVersion: 2.7.10
+Publisher: Microsoft Corporation
+Author: Microsoft
+PackageUrl: https://ironpython.net/
+License: Apache License 2.0
+ShortDescription: An open-source implementation of the Python programming language which is tightly integrated with the .NET Framework.
+Tags:
+- python
+- dotnet
+- clr
+- dlr
+InstallerType: msi
+Installers:
+- Architecture: x64
+  InstallerUrl: https://github.com/IronLanguages/ironpython2/releases/download/ipy-2.7.10/IronPython-2.7.10.msi
+  InstallerSha256: 388acb4fcad1627b2e0504e6d3c6c4f8ed4f2a4317e609a99466acbfabe1bc01
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0

manifests/m/Microsoft/Ironpython2/2.7.11/Microsoft.Ironpython2.yaml

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+PackageIdentifier: Microsoft.Ironpython2
+PackageName: Ironpython 2
+PackageVersion: 2.7.11
+Publisher: Microsoft Corporation
+Author: Microsoft
+PackageUrl: https://ironpython.net/
+License: Apache License 2.0
+ShortDescription: An open-source implementation of the Python programming language which is tightly integrated with the .NET Framework.
+Tags:
+- python
+- dotnet
+- clr
+- dlr
+InstallerType: msi
+Installers:
+- Architecture: x64
+  InstallerUrl: https://github.com/IronLanguages/ironpython2/releases/download/ipy-2.7.11/IronPython-2.7.11.msi
+  InstallerSha256: 7E77E74C53155F24318250319927C395F9F93924E178DF5F2D39989CC4BA8151
+  ProductCode: "{AE042631-2E79-48D7-BE13-5475DAB1AF78}"
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0

manifests/m/Microsoft/Ironpython2/2.7.9/Microsoft.Ironpython2.yaml

@@ -0,0 +1,20 @@
+PackageIdentifier: Microsoft.Ironpython2
+PackageName: Ironpython 2
+PackageVersion: 2.7.9
+Publisher: Microsoft
+Author: Microsoft
+License: Apache License 2.0
+ShortDescription: An open-source implementation of the Python programming language which is tightly integrated with the .NET Framework.
+Tags:
+- python
+- dotnet
+- clr
+- dlr
+InstallerType: msi
+Installers:
+- Architecture: x64
+  InstallerUrl: https://github.com/IronLanguages/ironpython2/releases/download/ipy-2.7.9/IronPython-2.7.9.msi
+  InstallerSha256: b4a637b201e349b3b78ec6025197a94d31014e788067f4b232b4d8393e0b4409
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0