Sysctl parameters needs to be correctly calculated

[thanusiak]

Please add the link to:

https://www.ibm.com/docs/en/cloud-paks/cp-data/3.5.0?topic=tasks-changing-required-node-settings#node-settings__kernel

in https://github.com/IBM-ICP4D/cloud-pak-ocp-4/blob/master/doc/install-cp4d-35.md#override-sysctl-settings-through-tuned

to suggest that the parameters depend on size of RAM