Getting rid of manual replacing in naming "_" to "-" in charts | Litmus-py SDK

[oumkale]

Is this a BUG REPORT or FEATURE REQUEST?

• On generating charts using Litmus SDK, By default names which get generated with in charts having with '_'.
  Example: 'sample_chaos_exec', after this we have to manually update it to 'sample-chaos-exec' before pushing it to chaos-charts.
• In this case, instead of replacing manually. generate_experiment.py should handle it.

[oumkale]

#49