Buffer size is limited that can produce leaks of messages in output

[denis-tingaikin]

Example output

See at
describe-ns-hcsmb.log
as you can see describe is not full.

Steps to reproduce

1. Create a new unit test
2. Create a bash instance
3. Write a file with text that has size more than 10000 bytes
4. Verify that we don't lose any byte in the output

[NikitaSkrynnik]

1. Tried to write files with size more then 1MB using bash instance. Result: no output leaks.
2. Tried to reduce timeout for log queries from kubernetes. Current timeout might be not enough to write all logs and pod describes. Result: even 80ms is enough to retrieve descriptions from all pods.

It looks like everything is ok.