CORD-391 - cleaned up ansible to pass cleanly through ansible-lint

Change-Id: I90284704255edc19abbdb239852c520a4bf48df4
diff --git a/roles/fabric-switch/tasks/main.yml b/roles/fabric-switch/tasks/main.yml
index 41251e7..e9e2873 100644
--- a/roles/fabric-switch/tasks/main.yml
+++ b/roles/fabric-switch/tasks/main.yml
@@ -15,7 +15,7 @@
   changed_when: false
 
 - name: Openflow Agent Version
-  shell: ofdpa --version
+  command: ofdpa --version
   register: ofdpa_version
   changed_when: false
   when: ofdpa_exists.stdout != "0"