limited by one ns and no event

[PunchGrey]

• in case when we can run the chaoskube only in the namespace w/o use cluster permission , then you can use the limited-by-one-namespace flag.
• in case when the chaoskube doesn't have write event permissions, then we can use the no-event flag.

[linki]

The part limiting access has been done in #399 and released in v0.27.0.

This leaves the --no-events feature in this PR.