e2e/eks: increase open files automatically

[cofyc]

Feature Request

Is your feature request related to a problem? Please describe:

[2020/02/19 12:42:23.564 +00:00] [FATAL] [server.rs:399] ["the maximum number of open file descriptors is too small, got 65536, expect greater or equal to 82920"]

the default open files limits on eks is too low.

Describe the feature you'd like:

increase open files automatically in e2e with eks provider

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

[cofyc]

xref: #1697