Create increase-request-size.md (#1183)

* Create increase-request-size.md

Add documentation for the "--dapr-http-max-request-size" argument for the CLI and "dapr.io/http-max-request-size" annotation
#1099

* Update increase-request-size.md

Co-authored-by: Mark Fussell <mfussell@microsoft.com>

daprdocs/content/en/operations/configuration/increase-request-size.md

@@ -0,0 +1,51 @@
+---
+type: docs
+title: "How-To: Handle large http body requests"
+linkTitle: "Http request body size"
+weight: 6000
+description: "Configure http requests that are bigger than 4 MB"
+---
+
+By default Dapr has a limit for the request body size which is set to 4 MB, however you can change this by defining `dapr.io/http-max-request-size` annotation or `--dapr-http-max-request-size` flag.
+
+
+### Self hosted
+
+When running in self hosted mode, use the `--dapr-http-max-request-size` flag to configure Dapr to use non-default request body size:
+
+```bash
+dapr run --dapr-http-max-request-size 16 node app.js
+```
+This tells Dapr to set maximum request body size to `16` MB.
+
+
+### Kubernetes
+
+On Kubernetes, set the following annotations in your deployment YAML:
+```yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: myapp
+  namespace: default
+  labels:
+    app: myapp
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: myapp
+  template:
+    metadata:
+      labels:
+        app: myapp
+      annotations:
+        dapr.io/enabled: "true"
+        dapr.io/app-id: "myapp"
+        dapr.io/app-port: "8000"
+        dapr.io/http-max-request-size: "16"
+...
+```
+
+## Related links
+- [Dapr Kubernetes pod annotations spec]({{< ref kubernetes-annotations.md >}})