[ssl_mgmt] Send all warning echo to stderr

Fix echos introduced 2 commits ago with parts of the messages sent to
stdout and the other parts to stderr.

ssl_mgmt/ssl_mgmt

@@ -147,7 +147,7 @@ set_variables ()
 	if [ -z "${rootCAPwdPath:-}" ]
 	then
 		echo -n "You must set rootCAPwdPath to the file containing" >&2
-		echo " the root CA password"
+		echo " the root CA password" >&2
 	fi
 	managedCerts=${managedCerts:-}
 	notifiedUsers=${notifiedUsers:-}
@@ -337,7 +337,7 @@ main ()
 		if [ -z "$managedCerts" ]
 		then
 			echo -n "You need to set managedCerts for renew" >&2
-			echo " all to work"
+			echo " all to work" >&2
 		fi
 		exit_if_no_access "$managedCerts" "READ"
 		services=""