Updated AWS ELB integrations (ALB, NLB, ELB Classic)

New

• Added support for AWS Network Load Balancers (NLBs)
• Added two Entity Types to New Relic: ELB network load balancer, ELB network target group
• Added more metrics for AWS Application Load Balancers see the documentation for the full list.

Changes

• Moved ALB and NLB integrations under the ELB section to align with AWS
• Renamed ELB integration to ELB (Classic)

Minor changes

• AWS RDS: All charts in the dashboard now FACETed by database name
• GCP: You can now see the amount of SDK API calls we make in the GCP Status Dashboard