Reverting default osom's db to in memory. All the deployment files...

Reverting default osom's db to in memory. All the deployment files (docker-compose, helm) by default switch to local db. Fix for #26

src/main/resources/application.yml

@@ -8,7 +8,7 @@ spring:
   application:
     name: openslice-osom
   datasource:
-    url: jdbc:h2:~/temp/tempdb;DB_CLOSE_DELAY=-1
+    url: jdbc:h2:mem:db;DB_CLOSE_DELAY=-1
     password: sa
     username: sa
   jpa: