Removes unnecessary package installations in packaging pipelines (#7341)

With the recent changes in packaging images, linux package installations
to execute validate_output is unnecessary now.
In this PR, I removed them to make the pipeline more effective.

- [x] Remove the test warning before merge

(cherry picked from commit 32b0fc23f5)

.github/packaging/validate_build_output.sh

@@ -32,7 +32,10 @@ python3 -m pip install -r tools/packaging_automation/requirements.txt
 echo "Package type: ${package_type}"
 echo "OS version: $(get_rpm_os_version)"
 
- # if os version is centos 7 or oracle linux 7, then remove urllib3 with pip uninstall and install urllib3<2.0.0 with pip install
+ # For RHEL 7, we need to install urllib3<2 due to below execution error
+ # ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl'
+ # module is compiled with 'OpenSSL 1.0.2k-fips  26 Jan 2017'.
+ # See: https://github.com/urllib3/urllib3/issues/2168
 if [[ ${package_type} == "rpm" && $(get_rpm_os_version) == 7* ]]; then
     python3 -m pip uninstall -y urllib3
     python3 -m pip install 'urllib3<2'

.github/workflows/packaging-test-pipelines.yml

@@ -111,11 +111,6 @@ jobs:
           PACKAGING_DOCKER_IMAGE: ${{ matrix.packaging_docker_image }}
         run: |
           echo "Postgres version: ${POSTGRES_VERSION}"
-
-          ## Install required packages to execute packaging tools for rpm based distros
-          yum install python3-pip python3-devel postgresql-devel -y || true
-          python3 -m pip install wheel
-
           ./.github/packaging/validate_build_output.sh "rpm"
 
   deb_build_tests:
@@ -191,9 +186,4 @@ jobs:
           PACKAGING_DOCKER_IMAGE: ${{ matrix.packaging_docker_image }}
         run: |
           echo "Postgres version: ${POSTGRES_VERSION}"
-
-          apt-get update -y
-          ## Install required packages to execute packaging tools for deb based distros
-          apt-get install python3-dev python3-pip -y
-          apt-get purge -y python3-yaml
           ./.github/packaging/validate_build_output.sh "deb"