Cluster autoscaler doc - part 1
Cluster autoscaler doc - part 1

(cherry picked from commit bf73c18603dbb28824199a7dfbe3cc796c0601b0)

rata/kubernetes.github.io,aidevops/kubernetes.github.io,erictune/erictune.github.io,ronaldpetty/kubernetes.github.io,aidevops/kubernetes.github.io,rata/kubernetes.github.io,erictune/erictune.github.io,ronaldpetty/kubernetes.github.io,rata/kubernetes.github.io,rata/kubernetes.github.io,erictune/erictune.github.io,aidevops/kubernetes.github.io,aidevops/kubernetes.github.io,ronaldpetty/kubernetes.github.io,rata/kubernetes.github.io,aidevops/kubernetes.github.io,erictune/erictune.github.io,erictune/erictune.github.io