Install the host rather than upgrading it

Upgrading will cause rpm to fail if the item is already present like the host. This is how it works in the installer 8.0.1xx branch

Author: marcpopMSFT

src/Installer/redist-installer/targets/GenerateRPMs.targets

@@ -327,17 +327,17 @@
 
     <!-- Install Dependencies and SDK Packages -->
     <Exec Command="sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc" />
-    <Exec Command="sudo rpm -Uv $(DownloadedRuntimeDepsInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedNetCoreAppHostPackInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedNetCoreAppTargetingPackInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedNetStandardTargetingPackInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedAspNetTargetingPackInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedSharedHostInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedHostFxrInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(DownloadedSharedFrameworkInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedRuntimeDepsInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedNetCoreAppHostPackInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedNetCoreAppTargetingPackInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedNetStandardTargetingPackInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedAspNetTargetingPackInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedSharedHostInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedHostFxrInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(DownloadedSharedFrameworkInstallerFile)" />
     <!-- Ignore dependencies, which may have an incoherent dependency on dotnet-runtime -->
-    <Exec Command="sudo rpm -Uv --nodeps $(DownloadedAspNetCoreSharedFxInstallerFile)" />
-    <Exec Command="sudo rpm -Uv $(SdkRPMInstallerFile)" />
+    <Exec Command="sudo rpm -iv --nodeps $(DownloadedAspNetCoreSharedFxInstallerFile)" />
+    <Exec Command="sudo rpm -iv $(SdkRPMInstallerFile)" />
 
     <!-- Run End-2-end Tests https://github.com/dotnet/core-sdk/issues/1174
     <DotNetRestore ProjectPath="$(EndToEndTestProject)"