Add changelog note

.chloggen/mx-psi_metrics-support.yaml

@@ -0,0 +1,21 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component (e.g. pkg/quantile)
+component: pkg/otlp/metrics
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add support for system metrics in host metadata
+
+# The PR related to this change
+issues: [184]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: | 
+  The following metrics are now added as host metadata if present:
+  - `system.cpu.physical.count`
+  - `system.cpu.logical.count`
+  - `system.cpu.frequency`
+  - `system.memory.limit`