Revision 21028: mqtt2.attrTemplate: add some ems-esp templates+bugfixes, add code and ...

[System]

Revision 21028: mqtt2.attrTemplate: add some ems-esp templates+bugfixes, add code and ...

mqtt2.attrTemplate: add some ems-esp templates+bugfixes, add code and further templates in contrib/AttrTemplate

Source: Revision 21028: mqtt2.attrTemplate: add some ems-esp templates+bugfixes, add code and ...