Add Fedora 28-31 to CI

Fedora 28,29 supports BPF but needs BTF which our loader doesn't do for BPF,
also likely doesn't support bpf ring buffers.
Fedora 30 doesn't support bpf ring buffers.
Fedora 31 supports everything.

Author: haesbaert

.buildkite/pipeline.yml

@@ -38,6 +38,50 @@ steps:
       machineType: n2-standard-2
       enableNestedVirtualization: true
 
+  - label: "quark-test on fedora 28 (no bpf)"
+    key: test_fedora_28
+    command: "./.buildkite/runtest_fedora.sh 28 -k"
+    depends_on:
+      - make_docker
+    agents:
+      image: family/core-ubuntu-2204
+      provider: gcp
+      machineType: n2-standard-2
+      enableNestedVirtualization: true
+
+  - label: "quark-test on fedora 29 (no bpf)"
+    key: test_fedora_29
+    command: "./.buildkite/runtest_fedora.sh 29 -k"
+    depends_on:
+      - make_docker
+    agents:
+      image: family/core-ubuntu-2204
+      provider: gcp
+      machineType: n2-standard-2
+      enableNestedVirtualization: true
+
+  - label: "quark-test on fedora 30 (no bpf)"
+    key: test_fedora_30
+    command: "./.buildkite/runtest_fedora.sh 30 -k"
+    depends_on:
+      - make_docker
+    agents:
+      image: family/core-ubuntu-2204
+      provider: gcp
+      machineType: n2-standard-2
+      enableNestedVirtualization: true
+
+  - label: "quark-test on fedora 31 (no bpf)"
+    key: test_fedora_31
+    command: "./.buildkite/runtest_fedora.sh 31 -k"
+    depends_on:
+      - make_docker
+    agents:
+      image: family/core-ubuntu-2204
+      provider: gcp
+      machineType: n2-standard-2
+      enableNestedVirtualization: true
+
   - label: "quark-test on fedora 32"
     key: test_fedora_32
     command: "./.buildkite/runtest_fedora.sh 32"

.buildkite/runtest_fedora.sh

@@ -3,6 +3,7 @@
 set -euo pipefail
 
 FEDORAVER="$1"
+shift
 
 function download {
 	buildkite-agent artifact download "$1" "$2"
@@ -32,6 +33,6 @@ sudo apt-get -qq install -y --no-install-recommends	\
 sudo kvm-ok
 
 # Run Forrest Run
-sudo ./krun-fedora.sh initramfs.gz $FEDORAVER quark-test
+sudo ./krun-fedora.sh initramfs.gz $FEDORAVER quark-test $@
 
 exit $?