Rename counters and adjust params for network stats

[lucekdudek]

New example output of the ray-on-golem network-stats

$ ray-on-golem network-stats golem-cluster.dev.yaml -d 1
Gathering stats data for 1 minutes...
Gathering stats data done

Proposals count:
Initial: 66
Not blacklisted: 66
Passed Reject if max_average_usage_cost exceeds 1.5: 66
Passed Reject if price_initial exceeds 0.5: 66
Passed Reject if price_cpu_sec exceeds 0.0005: 66
Passed Reject if price_duration_sec exceeds 0.0005: 66
Negotiation initialized: 64
Negotiated successfully: 26

Negotiation errors:
Failed to send proposal response! Request timed out: 31
Failed to send proposal response! 500: {"message":"Failed to send response for Proposal [***]. Error: Countering Proposal [***] GSB error: GSB failure: Net: error forwarding message: Socket closed.."}: 2
No capacity available. Reached Agreements limit: 1: 1