fix(cluster.py): Creating new patch_scylla_yaml func to patch specific Scylla YAML
fix(cluster.py): Creating new patch_scylla_yaml func to patch specific Scylla YAML

* The function replaces only specific values within a YAML file.
* Unlike the function "config_setup", the current function only changes the values
   the user has sent.
* The function is designed to run the nemesis "NodeRestartWithResharding" on Siren.

Trello URL: https://trello.com/c/WDeCANXw/2033-cloud-operations-noderestartwithresharding-nemesis

scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests