GCE: fix gce.sh startup (#7043)

    replace random deb for earlyoom with apt-get install
    update to use 24.04 ubuntu image
    remove docker requirement for any host not running 22.04 (as long as you have compatible libc you should be ok)
    fix the SSH startup script to correctly reload sshd

net/net.sh

@@ -189,9 +189,8 @@ annotateBlockexplorerUrl() {
 }
 
 build() {
-  supported=("22.04")
   declare MAYBE_DOCKER=
-  if [[ $(uname) != Linux || ! " ${supported[*]} " =~ $(lsb_release -sr) ]]; then
+  if [[ $(uname) != Linux ]]; then
     # shellcheck source=ci/docker/env.sh
     source "$SOLANA_ROOT"/ci/docker/env.sh
     MAYBE_DOCKER="ci/docker-run.sh ${CI_DOCKER_IMAGE:?}"

net/scripts/gce-provider.sh

@@ -170,7 +170,6 @@ cloud_CreateInstances() {
   declare optionalBootDiskType="${10:-pd-ssd}"
   declare optionalAdditionalDiskSize="${11}"
   declare optionalPreemptible="${12}"
-  #declare sshPrivateKey="${13}"  # unused
 
   if $enableGpu; then
     # Custom Ubuntu 20.04 LTS image with CUDA 10.2 installed
@@ -185,7 +184,7 @@ cloud_CreateInstances() {
     echo "Error: Not supported" >&2
     exit 1
   else
-    imageName="ubuntu-2204-jammy-v20241119 --image-project ubuntu-os-cloud"
+    imageName="ubuntu-2404-noble-amd64-v20250709 --image-project ubuntu-os-cloud"
   fi
 
   declare -a nodes

net/scripts/install-earlyoom.sh

@@ -15,8 +15,7 @@ echo kernel.sysrq=1 >> /etc/sysctl.conf
 if command -v earlyoom; then
   systemctl status earlyoom
 else
-  wget  -r -l1 -np http://ftp.us.debian.org/debian/pool/main/e/earlyoom/ -A 'earlyoom_1.2-*_amd64.deb' -e robots=off -nd
-  apt install --quiet --yes ./earlyoom_1.2-*_amd64.deb
+  apt-get install --quiet --yes earlyoom
 
   cat > earlyoom <<OOM
   # trigger at 20% available RAM,

net/scripts/network-config.sh

@@ -15,5 +15,4 @@ sudo sysctl -w vm.max_map_count=1000000
 echo "* - nofile 1000000" | sudo tee -a /etc/security/limits.conf
 
 echo "MaxAuthTries 60" | sudo tee -a /etc/ssh/sshd_config
-sudo service sshd restart
-sudo systemctl restart sshd
+sudo systemctl restart ssh