Add Submariner

We're the main contributors to the project, and it is shipped as part
of Advanced Cluster Management for Kubernetes.

Signed-off-by: Stephen Kitt <skitt@redhat.com>

Author: skitt

data/projects.json

@@ -1400,6 +1400,16 @@
     "twitterURL": "",
     "lowercaseName": "strimzi"
   },
+  {
+    "projectName": "Submariner",
+    "projectDescription": "Submariner enables direct networking between Pods and Services in different Kubernetes clusters, either on-premises or in the cloud.",
+    "projectRepository": "https://github.com/submariner-io",
+    "projectWebsite": "https://submariner.io/",
+    "category": "Middleware",
+    "twitterHandle": "submarinerio",
+    "twitterURL": "https://twitter.com/submarinerio",
+    "lowercaseName": "submariner"
+  },		
   {
     "projectName": "SwitchYard",
     "projectDescription": "SwitchYard is a component-based development framework focused on building structured, maintainable services and applications",