[TEST REQUIRED] Please begin Skywaliking Chart 1.1.0 (SkyWalking 6.6.0) release Test

[hw zhai]

Hi everyone

SkyWalking Chart will release the first release version (1.1.0), based on
SkyWalking  6.6.0.

Testing requirements:
- Is it possible to deploy Skywalking(6.6.0) and ES (6)?
- Is it possible to deploy Skywalking(6.6.0) and ES (7)?
- Is it possible to just deploy Skywalking and use an existing ES cluster?
- Is Skywalking available after deployment?

Thanks for everyone's testing.