Add more help text to make sharing cluster templates clearer
Add more help text to make sharing cluster templates clearer

rancher/rancher#21414

vincent99/ui,rancher/ui,westlywright/ui,rancherio/ui,vincent99/ui,westlywright/ui,westlywright/ui,rancherio/ui,rancher/ui,vincent99/ui,rancher/ui,rancherio/ui