Add missing Ansible invocation debug env variables

This debug line is intended to aid in reproducing an ansible run
manually on the executor, but is missing several important env
variables.  Add them.

Change-Id: Ic1e05798d2f8c07cd71b17a76c599ee8d102b183

zuul/executor/server.py

@@ -1895,8 +1895,14 @@ class AnsibleJob(object):
         with self.proc_lock:
             if self.aborted:
                 return (self.RESULT_ABORTED, None)
-            self.log.debug("Ansible command: ANSIBLE_CONFIG=%s %s",
-                           config_file, " ".join(shlex.quote(c) for c in cmd))
+            self.log.debug("Ansible command: ANSIBLE_CONFIG=%s ZUUL_JOBDIR=%s "
+                           "ZUUL_JOB_LOG_CONFIG=%s PYTHONPATH=%s TMP=%s %s",
+                           env_copy['ANSIBLE_CONFIG'],
+                           env_copy['ZUUL_JOBDIR'],
+                           env_copy['ZUUL_JOB_LOG_CONFIG'],
+                           env_copy['PYTHONPATH'],
+                           env_copy['TMP'],
+                           " ".join(shlex.quote(c) for c in cmd))
             self.proc = popen(
                 cmd,
                 cwd=self.jobdir.work_root,