Release v1.11.0

v1.11.0 (2022-05-04)

Context

• No changes.

Traces

• No changes.

Metrics

• Clarify that API support for multi-instrument callbacks is permitted.
  (#2263).
• Drop histogram aggregation, default to explicit bucket histogram
  (#2429)
• Clarify SDK behavior when view conflicts are present
  (#2462).
• Add support for exemplars on OpenMetrics counters
  (#2483)
• Clarify MetricReader.Collect result
  (#2495).
• Add database connection pool metrics semantic conventions
  (#2273).

Logs

• Update com.google.* to gcp.* in logs data model
  (#2514).

Resource

• No changes.

Semantic Conventions

• Note added that net.peer.name SHOULD NOT be set if capturing it would require an
  extra reverse DNS lookup. And moved net.peer.name from common http attributes to
  just client http attributes.
  (#2446)
• Add net.host.name and net.host.ip conventions for rpc server spans.
  (#2447)
• Allow all metric conventions to be either synchronous or asynchronous.
  (#2458
• Update JVM metrics with JMX Gatherer values
  (#2478)
• Add HTTP/3
  (#2507)
• Map SunOS to solaris for os.type resource attribute
  (#2509)

Compatibility

• No changes.

OpenTelemetry Protocol

• Clarify gRPC insecure option (#2476)
• Specify that OTLP/gRPC clients should retry on RESOURCE_EXHAUSTED code only if the server signals backpressure to indicate a possible recovery.
  (#2480)

SDK Configuration

• No changes.

Telemetry Schemas

• No changes.

Common

• Define semantic conventions and instrumentation stability.
  (#2180)
• Loosen requirement for a major version bump
  ([#2510](https://github.com/open-t