Introduce request error type attribute (#205)

Co-authored-by: Joao Grassi <joao@joaograssi.com>
Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
Co-authored-by: Armin Ruech <armin.ruech@dynatrace.com>

CHANGELOG.md

@@ -65,6 +65,8 @@ release.
  ([#276](https://github.com/open-telemetry/semantic-conventions/pull/276))
 - Add host cpu resource attributes.
  ([#209](https://github.com/open-telemetry/semantic-conventions/pull/209))
+- Introduce `error.type` attribute and use it in HTTP conventions
+ ([#205](https://github.com/open-telemetry/semantic-conventions/pull/205))
 - BREAKING: Change HTTP span name when method is unknown (use `HTTP` instead of `_OTHER`)
  ([#270](https://github.com/open-telemetry/semantic-conventions/pull/270))
 - Moved RPC streaming notes from metric brief section to notes section.