[exporter/datadog] Lower gohai logs to debug level (open-telemetry#31703)

**Description:** Demote gohai logs to debug level

**Link to tracking Issue:** Fixes open-telemetry#29741

Author: mx-psi

.chloggen/mx-psi_lower-log-level-gohai.yaml

@@ -0,0 +1,28 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: exporter/datadog
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Demote noisy gohai logs to debug level
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [29741]
+
+# (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: | 
+  These logs would be present at the info level when using the official Docker images but were not useful to end-users.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

exporter/datadogexporter/internal/hostmetadata/internal/gohai/gohai.go

@@ -26,23 +26,23 @@ func newGohai(logger *zap.Logger) *gohai.Gohai {
 	res := new(gohai.Gohai)
 
 	if p, err := new(cpu.Cpu).Collect(); err != nil {
-		logger.Info("Failed to retrieve cpu metadata", zap.Error(err))
+		logger.Debug("Failed to retrieve cpu metadata", zap.Error(err))
 	} else if cpu, ok := p.(map[string]string); !ok {
 		logger.Warn("Internal error: Failed to cast cpu metadata to map[string]string", zap.Any("cpu", p))
 	} else {
 		res.CPU = cpu
 	}
 
 	if p, err := new(filesystem.FileSystem).Collect(); err != nil {
-		logger.Info("Failed to retrieve filesystem metadata", zap.Error(err))
+		logger.Debug("Failed to retrieve filesystem metadata", zap.Error(err))
 	} else if fs, ok := p.([]any); !ok {
 		logger.Warn("Internal error: Failed to cast filesystem metadata to []any", zap.Any("filesystem", p))
 	} else {
 		res.FileSystem = fs
 	}
 
 	if p, err := new(memory.Memory).Collect(); err != nil {
-		logger.Info("Failed to retrieve memory metadata", zap.Error(err))
+		logger.Debug("Failed to retrieve memory metadata", zap.Error(err))
 	} else if mem, ok := p.(map[string]string); !ok {
 		logger.Warn("Internal error: Failed to cast memory metadata to map[string]string", zap.Any("memory", p))
 	} else {
@@ -51,15 +51,15 @@ func newGohai(logger *zap.Logger) *gohai.Gohai {
 
 	// in case of containerized environment, this would return pod id not node's ip
 	if p, err := new(network.Network).Collect(); err != nil {
-		logger.Info("Failed to retrieve network metadata", zap.Error(err))
+		logger.Debug("Failed to retrieve network metadata", zap.Error(err))
 	} else if net, ok := p.(map[string]any); !ok {
 		logger.Warn("Internal error: Failed to cast network metadata to map[string]any", zap.Any("network", p))
 	} else {
 		res.Network = net
 	}
 
 	if p, err := new(platform.Platform).Collect(); err != nil {
-		logger.Info("Failed to retrieve platform metadata", zap.Error(err))
+		logger.Debug("Failed to retrieve platform metadata", zap.Error(err))
 	} else if platform, ok := p.(map[string]string); !ok {
 		logger.Warn("Internal error: Failed to cast platform metadata to map[string]string", zap.Any("platform", p))
 	} else {