[JIRA] (OVIRT-1836) Optimize options normalization methods in stdci_dsl

Optimize options normalization methods in stdci_dsl --------------------------------------------------- Key: OVIRT-1836 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1836 Project: oVirt - virtualization made easy Issue Type: Improvement Components: STDCI DSL Reporter: Daniel Belenky Assignee: infra Generally, we have 4 kinds of options: script, globals, options that affect host selection and options to configure the runner. We need to take care of global options first since they affect everything, then take care of script because it tells which vectors to throw away. Since runners and pipelines care about different sets of options, we need to split the options handling functions. This will enable us to compose much more efficient pipelines in the API.