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

@@ -1,21 +1,19 @@
 ---
-- hosts: netflows
+- name: Install fprobe Package
-  tasks:
-    - name: Install fprobe Package
   become: yes
   apt:
     name: ['fprobe']
     state: present
     update_cache: true
   tags: install_fprobe
-    - lineinfile:
+- lineinfile:
     path: /etc/default/fprobe
     state: present
     backrefs: yes
     regexp: '^FLOW_COLLECTOR="localhost:555"'
     line: 'FLOW_COLLECTOR="192.168.200.247:9995"'
   become: true
-    - name: enable fprobe service and ensure it is not masked
+- name: enable fprobe service and ensure it is not masked
   systemd:
     name: fprobe
     enabled: yes