fix: only provision Ubuntu with /opt/azure/manifest.json

It's a legacy file with .deb package data, and Flatcar needs to save
space in OSProfile.

Also the `MANIFEST_FILEPATH` references in the tests were unused.

Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>

Author: chewi

parts/linux/cloud-init/nodecustomdata.yml

@@ -108,12 +108,14 @@ write_files:
   content: !!binary |
     {{GetVariableProperty "cloudInitData" "provisionConfigs"}}
 
+{{ if not (or IsMariner IsFlatcar) -}}
 - path: /opt/azure/manifest.json
   permissions: "0644"
   encoding: gzip
   owner: root
   content: !!binary |
     {{GetVariableProperty "cloudInitData" "componentManifestFile"}}
+{{- end }}
 
 - path: {{GetInitAKSCustomCloudFilepath}}
   permissions: "0744"

vhdbuilder/packer/pre-install-dependencies.sh

@@ -20,10 +20,8 @@ CPU_ARCH=$(getCPUArch)  #amd64 or arm64
 VHD_LOGS_FILEPATH=/opt/azure/vhd-install.complete
 COMPONENTS_FILEPATH=/opt/azure/components.json
 PERFORMANCE_DATA_FILE=/opt/azure/vhd-build-performance-data.json
-MANIFEST_FILEPATH=/opt/azure/manifest.json
 #this is used by post build test to check whether the compoenents do indeed exist
 cat components.json > ${COMPONENTS_FILEPATH}
-cat manifest.json > ${MANIFEST_FILEPATH}
 echo "Starting build on " $(date) > ${VHD_LOGS_FILEPATH}
 
 if isMarinerOrAzureLinux "$OS"; then

vhdbuilder/packer/test/linux-vhd-content-test.sh

@@ -1,6 +1,5 @@
 #!/bin/bash
 COMPONENTS_FILEPATH=/opt/azure/components.json
-MANIFEST_FILEPATH=/opt/azure/manifest.json
 VHD_LOGS_FILEPATH=/opt/azure/vhd-install.complete
 UBUNTU_OS_NAME="UBUNTU"
 MARINER_OS_NAME="MARINER"