Refactoring of generation process

Create the Generator class to create and generate variables.

Changes must be propagated to the sandbox-service and ansibler-runner.

assigned to @492988

created branch 4-refactoring-of-generation-process to address this issue

mentioned in merge request !11

changed the description

added prioritylow label

assigned to @485429 and unassigned @492988

assigned to @514294

added to epic muni-kypo-crp&36

assigned to @536667 and unassigned @514294

assigned to @andy1609 and unassigned @536667