Plumb through log analytics values (#274)

* plumb through log analytics values

* add option to specify a log analytics file as well

* use secret for log analytics

providers/azure/client/aci/analytics.go

@@ -0,0 +1,39 @@
+package aci
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+)
+
+func NewContainerGroupDiagnostics(logAnalyticsID, logAnalyticsKey string) (*ContainerGroupDiagnostics, error) {
+
+	if logAnalyticsID == "" || logAnalyticsKey == "" {
+		return nil, errors.New("Log Analytics configuration requires both the workspace ID and Key")
+	}
+
+	return &ContainerGroupDiagnostics{
+		LogAnalytics: &LogAnalyticsWorkspace{
+			WorkspaceID:  logAnalyticsID,
+			WorkspaceKey: logAnalyticsKey,
+		},
+	}, nil
+}
+
+func NewContainerGroupDiagnosticsFromFile(filepath string) (*ContainerGroupDiagnostics, error) {
+
+	analyticsdata, err := ioutil.ReadFile(filepath)
+	if err != nil {
+		return nil, fmt.Errorf("Reading Log Analytics Auth file %q failed: %v", filepath, err)
+	}
+	// Unmarshal the log analytics file.
+	var law LogAnalyticsWorkspace
+	if err := json.Unmarshal(analyticsdata, &law); err != nil {
+		return nil, err
+	}
+
+	return &ContainerGroupDiagnostics{
+		LogAnalytics: &law,
+	}, nil
+}