Fix StatefulSets: Zookeeper pod affinity
Fix StatefulSets: Zookeeper pod affinity

According to docs, `requiredDuringSchedulingRequiredDuringExecution`
not yet implemented.

rchicoli/kubernetes-contrib,ixdy/contrib,Q-Lee/contrib,piosz/contrib,xialonglee/contrib,jcmoraisjr/k8s-contrib,thockin/contrib,x13n/contrib,widgetpl/contrib,grodrigues3/contrib,thockin/contrib,grodrigues3/contrib,verb/contrib,rchicoli/kubernetes-contrib,kskalski/contrib,widgetpl/contrib,ingvagabund/contrib,rchicoli/kubernetes-contrib,ingvagabund/contrib,Pensu/contrib,verb/contrib,foxish/contrib,ingvagabund/contrib,foxish/contrib,jcmoraisjr/k8s-contrib,xialonglee/contrib,kskalski/contrib,foxish/contrib,Q-Lee/contrib,Pensu/contrib,rchicoli/kubernetes-contrib,jcmoraisjr/k8s-contrib,cdemers/contrib,ingvagabund/contrib,ixdy/contrib,piosz/contrib,aledbf/contrib,foxish/contrib,ingvagabund/contrib,thockin/contrib,piosz/contrib,grodrigues3/contrib,cdemers/contrib,verb/contrib,aledbf/contrib,thockin/contrib,aledbf/contrib,Q-Lee/contrib,jcmoraisjr/k8s-contrib,verb/contrib,kskalski/contrib,cdemers/contrib,Pensu/contrib,moul/contrib,aledbf/contrib,kskalski/contrib,jcmoraisjr/k8s-contrib,moul/contrib,xialonglee/contrib,widgetpl/contrib,moul/contrib,Pensu/contrib,widgetpl/contrib,aledbf/contrib,foxish/contrib,ixdy/contrib,Q-Lee/contrib,xialonglee/contrib,piosz/contrib,x13n/contrib,thockin/contrib,xialonglee/contrib,x13n/contrib,ixdy/kubernetes-contrib,x13n/contrib,cdemers/contrib,kskalski/contrib,ingvagabund/contrib,x13n/contrib,piosz/contrib,verb/contrib,grodrigues3/contrib,Q-Lee/contrib,foxish/contrib,widgetpl/contrib,moul/contrib,x13n/contrib,rchicoli/kubernetes-contrib,aledbf/contrib,jcmoraisjr/k8s-contrib,grodrigues3/contrib,Pensu/contrib,cdemers/contrib,ixdy/kubernetes-contrib,ixdy/kubernetes-contrib,thockin/contrib,Pensu/contrib,cdemers/contrib,ixdy/kubernetes-contrib,piosz/contrib,ixdy/kubernetes-contrib,Q-Lee/contrib,ixdy/kubernetes-contrib,grodrigues3/contrib,moul/contrib,kskalski/contrib,widgetpl/contrib,rchicoli/kubernetes-contrib,xialonglee/contrib,verb/contrib