Add dev/telegraf.conf for docker, exec, and procstat input (#4460)

plugins/inputs/exec/dev/telegraf.conf

@@ -0,0 +1,26 @@
+[agent]
+  interval="1s"
+  flush_interval="1s"
+
+[[inputs.exec]]
+  timeout = "1s"
+  data_format = "influx"
+  commands = [
+    "echo 'deal,computer_name=hosta message=\"stuff\" 1530654676316265790'",
+    "echo 'deal,computer_name=hostb message=\"stuff\" 1530654676316265790'",
+  ]
+
+[[processors.regex]]
+  [[processors.regex.tags]]
+    key = "computer_name"
+    pattern = "^(.*?)a$"
+    replacement = "${1}"
+    result_key = "server_name"
+  [[processors.regex.tags]]
+    key = "computer_name"
+    pattern = "^(.*?)b$"
+    replacement = "${1}"
+    result_key = "server_name"
+
+[[outputs.file]]
+  files = ["stdout"]