Werk #11092: One service per region for AWS limits

With this werk, the monitoring of limits for AWS services is split into one service per region. Before, all regions were combined into a single service, which resulted in potentially quite a lot of output and caused problems with the graphs for 2 or more regions.

To apply this werk, users have to re-discover the corresponding services, which will result in a loss of the historically recorded metrics. This is best done using "Automatic refresh (tabula rasa)" in the WATO-menus of the affected hosts. Note that rules for upper or lower levels created before this werk are not affected and will apply to all newly discovered services. After installing the werk, they can be modified to only apply to certain regions.

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