Update metadata requirements info

metadata.json

@@ -27,19 +27,19 @@
   "dependencies": [
     {
       "name": "puppetlabs/stdlib",
-      "version_range": ">= 1.0.0"
+      "version_range": ">=4.0.0"
     },
     {
       "name": "puppetlabs/firewall",
-      "version_range": ">= 1.0.0"
+      "version_range": ">=1.0.0 <2.0.0"
     },
     {
       "name": "jgazeley/syslog",
-      "version_range": ">= 0.1.0"
+      "version_range": ">=0.1.0"
     },
     {
       "name": "puppetlabs/concat",
-      "version_range": ">= 1.0.0"
+      "version_range": ">=1.0.0"
     }
   ]
 }