add IRIS API username to env template

add IRIS API Accept header

collections/IRIS GW (Gateway) REST API (v1)/.env.template

@@ -1 +1,2 @@
 IrisApiPassword=
+IrisApiUsername=

collections/IRIS GW (Gateway) REST API (v1)/environments/IRIS - Prod.yml

@@ -4,6 +4,6 @@ variables:
   - name: IrisApiUrl
     value: https://air.unipr.it/gw/rest/api
   - name: IrisApiUsername
-    value: restentities
+    value: "{{process.env.IrisApiUsername}}"
   - name: IrisApiPassword
     value: "{{process.env.IrisApiPassword}}"

collections/IRIS GW (Gateway) REST API (v1)/opencollection.yml

@@ -15,6 +15,9 @@ config:
       bypassProxy: ""
 
 request:
+  headers:
+    - name: Accept
+      value: "*/*"
   auth:
     type: basic
     username: "{{IrisApiUsername}}"