Make this more resilient to errors in submission

If submission fails, the 'stage' subdirectory won't exist; watch out for
that.

Also, catch exceptions from SCPClient and delete the job.

tej/remotes/default/commands/status

@@ -71,7 +71,7 @@ else  # [ "$status" = incomplete -o "$status" = created ]
     if [ -n "$started_date" ]; then
         echo "Created $(date "--date=$started_date")" >&2
     fi
-    cd "$job_root/stage"
-    pwd
+    cd "$job_root"
+    echo "$(pwd)/stage"
     exit 1
 fi

tej/submission.py

@@ -455,10 +455,17 @@ def submit(self, job_id, directory, script=None):
         logger.debug("Server created directory %s", target)
 
         # Upload to directory
-        scp_client = scp.SCPClient(self.get_client().get_transport())
-        scp_client.put(str(Path(directory)),
-                       str(target),
-                       recursive=True)
+        try:
+            scp_client = scp.SCPClient(self.get_client().get_transport())
+            scp_client.put(str(Path(directory)),
+                           str(target),
+                           recursive=True)
+        except BaseException as e:
+            try:
+                self.delete(job_id)
+            except:
+                raise e
+            raise
         logger.debug("Files uploaded")
 
         # Submit job