TDI-31146: When MDM team finish TMDM-7898, fixed the code in component
side.
https://jira.talendforge.org/browse/TDI-31146
Note:Validate the client instance connection.
TDI-30999: Cannot use 2 or more tsendmail with different connection
parameters
https://jira.talendforge.org/browse/TDI-30999
Note:Remove custom properties
TDI-31064:Job Setting: The Password in Stats&Logs should be read-only
instead of writable as plaintext
Merge branch 'bugfix/5.6/TDI-31064' into maintenance/5.6
Merge branch 'maintenance/5.6'