add datacenter location awareness with pseudo-driver (cmd and file)

netbox_agent/drivers/datacenter_cmd.py

@@ -0,0 +1,11 @@
+import re
+import subprocess
+
+
+def get(value, regex):
+    output = subprocess.getoutput(value)
+    r = re.search(regex, output)
+    if r:
+        result = r.group('datacenter')
+        return result
+    return None