message: Create common.proj
diff: <Project ToolsVersion="15.0">
  <PropertyGroup Condition="$(Common) == '*Undefined*' OR $(Common) == '' " >
  - <VersionPrefix>1.0.1</VersionPrefix>
  + <VersionPrefix>1.1.0</VersionPrefix>
  <Common>$(MsBuildThisFileDirectory)</Common>
  <GenerateFullPaths>true</GenerateFullPaths>
  <!-- <SolutionDir>$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),AutoRest.sln))/</SolutionDir> -->
  