machines: Use all cells when getting Host Max Memory
machines: Use all cells when getting Host Max Memory

Closes #13300
cockpituous/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,deryni/cockpit,garrett/cockpit,cockpituous/cockpit,cockpit-project/cockpit,cockpituous/cockpit,cockpituous/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,mvollmer/cockpit,cockpituous/cockpit,garrett/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,deryni/cockpit,garrett/cockpit,deryni/cockpit,deryni/cockpit,deryni/cockpit,garrett/cockpit,mvollmer/cockpit,deryni/cockpit,cockpituous/cockpit,deryni/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,garrett/cockpit,cockpit-project/cockpit,mvollmer/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit