app/matrix: add healthchecks, increase generic workers

Change-Id: I1605919d52c69044963082bbf094ff2ece902471
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1147
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/app/matrix/matrix.hackerspace.pl.jsonnet b/app/matrix/matrix.hackerspace.pl.jsonnet
index a30d722..8d341c4 100644
--- a/app/matrix/matrix.hackerspace.pl.jsonnet
+++ b/app/matrix/matrix.hackerspace.pl.jsonnet
@@ -42,8 +42,16 @@
         },
     },
 
-    // Synapse media worker has been replaced by matrix-media-repo deployment
     synapse+: {
+        genericWorker+: {
+            deployment+: {
+                spec+: {
+                    replicas: 4,
+                },
+            },
+        },
+
+        // Synapse media worker has been replaced by matrix-media-repo deployment
         mediaWorker+: {
             deployment+: {
                 spec+: {