Changed "netflows" role to be consistent with role setup.

Also, main.yaml in root is example of how to "call" roles

main.retry

@@ -0,0 +1 @@
+192.168.50.2

main.yaml

@@ -0,0 +1,5 @@
+---
+- hosts: netflows
+  become: true
+  roles:
+          - netflows

roles/netflows/tasks/main.yaml

@@ -1,6 +1,4 @@
 ---
-- hosts: netflows
-  tasks:
 - name: Install fprobe Package
   become: yes
   apt: