ci: Free up disk space in a more robust way.

Use apt patterns [0] to only try to remove real packages.  Also unify
the way we free up disk space for all workflows.

[0] https://manpages.ubuntu.com/manpages/focal/man7/apt-patterns.7.html

Signed-off-by: Dumitru Ceara <dceara@redhat.com>
Acked-by: Ales Musil <amusil@redhat.com>

.ci/linux-util.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+function free_up_disk_space_ubuntu()
+{
+    local pkgs='azure-cli aspnetcore-* dotnet-* ghc-* firefox*
+                google-chrome-stable google-cloud-sdk libmono-* llvm-*
+                microsoft-edge-stable mono-* msbuild mysql-server-core-*
+                php-* php7* powershell* temurin-* zulu-*'
+
+    # Use apt patterns to only select real packages that match the names
+    # in the list above.
+    local pkgs=$(echo $pkgs | sed 's/[^ ]* */~n&/g')
+
+    sudo apt update && sudo apt-get --auto-remove -y purge $pkgs
+}

.github/workflows/ovn-fake-multinode-tests.yml

@@ -99,13 +99,18 @@ jobs:
       XDG_RUNTIME_DIR: ''
 
     steps:
+    - name: Check out ovn
+      uses: actions/checkout@v3
+
     - name: install required dependencies
       run:  |
         sudo apt update || true
         sudo apt install -y ${{ env.dependencies }}
 
     - name: Free up disk space
-      run: sudo eatmydata apt-get remove --auto-remove -y aspnetcore-* dotnet-* libmono-* mono-* msbuild php-* php7* ghc-* zulu-*
+      run: |
+        . .ci/linux-util.sh
+        free_up_disk_space_ubuntu
 
     - uses: actions/download-artifact@v3
       with:

.github/workflows/ovn-kubernetes.yml

@@ -95,18 +95,14 @@ jobs:
       KIND_IPV6_SUPPORT: "${{ matrix.ipfamily == 'IPv6' || matrix.ipfamily == 'dualstack' }}"
     steps:
 
-    - name: Free up disk space
-      run: |
-        sudo eatmydata apt-get purge --auto-remove -y \
-          azure-cli aspnetcore-* dotnet-* ghc-* firefox \
-          google-chrome-stable google-cloud-sdk \
-          llvm-* microsoft-edge-stable mono-* \
-          msbuild mysql-server-core-* php-* php7* \
-          powershell temurin-* zulu-*
-
     - name: Check out ovn
       uses: actions/checkout@v3
 
+    - name: Free up disk space
+      run: |
+        . .ci/linux-util.sh
+        free_up_disk_space_ubuntu
+
     - name: Check out ovn-kubernetes
       uses: actions/checkout@v3
       with:

Makefile.am

@@ -90,6 +90,7 @@ EXTRA_DIST = \
 	.ci/dpdk-build.sh \
 	.ci/dpdk-prepare.sh \
 	.ci/linux-build.sh \
+	.ci/linux-util.sh \
 	.ci/osx-build.sh \
 	.ci/osx-prepare.sh \
 	.ci/ovn-kubernetes/Dockerfile \