Conform to underscore-style role names

README.md

-# netdata-collector
+# netdata_collector
 
 Configures netdata to collect metrics and send them to another instance.
 

meta/main.yml

@@ -3,3 +3,4 @@ dependencies:
   - src: git@gitlab.fachschaften.org:fsi-ansible/netdata-base.git
     scm: git
     version: "v1.0"
+    name: netdata_base