Conform to underscore-style role names

README.md

-# netdata-server
+# netdata_server
 
 Configures netdata to monitor the host and send alerts.
 

meta/main.yml

@@ -3,6 +3,7 @@ dependencies:
   - src: git@gitlab.fachschaften.org:fsi-ansible/netdata-base.git
     scm: git
     version: "v1.0"
+    name: netdata_base
   - src: git@gitlab.fachschaften.org:fsi-ansible/msmtp_relay.git
     scm: git
     version: "v1.0"