fix selector for kube_node_status_allocatable_memory_bytes and kube_resourcequota

Created by: junotx

https://github.com/kubesphere/ks-installer/commit/d13fe797ab9576e5ef5f79b42c97d898ca175137 fix selector for kube_node_status_allocatable_memory_bytes following the fix https://github.com/kubesphere/kubernetes-mixin/pull/28 and https://github.com/kubesphere/kubernetes-mixin/pull/29 https://github.com/kubesphere/ks-installer/commit/f1943db2beafbbcd8e714dc044a67b6c7351c984 fix selector for kube_resourcequota following the fix https://github.com/kubesphere/kubernetes-mixin/pull/30

/assign @benjaminhuo