orchestrator: Monitor status of parts

When a phase is started or stopped, add a line to the to output. This
should help users keep track of what is happening in case the part takes
a long time to run.

JIRA: COMPOSE-3287
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

bin/pungi-notification-report-progress

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import argparse
+import json
+import os
+import sys
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('cmd')
+    opts = parser.parse_args()
+
+    data = json.load(sys.stdin)
+    compose = data["location"]
+
+    dest = os.environ["_PUNGI_ORCHESTRATOR_PROGRESS_MONITOR"]
+
+    with open(dest, "a") as f:
+        if opts.cmd == "phase-start":
+            print("%s: phase %s started" % (compose, data["phase_name"]), file=f)
+        elif opts.cmd == "phase-stop":
+            print("%s: phase %s finished" % (compose, data["phase_name"]), file=f)