Change Details

This introduces metric filters to be used by cloudwatch alarms later in the stack. Decided to use a for_each pattern so adding new identity alarms can be as easy as adding the pattern to `identity_error_patterns`.

This introduces metric filters to be used by cloudwatch alarms later in the stack. Decided to use a for_each pattern so adding new identity alarms can be as easy as adding the pattern to `identity_error_patterns`. Depends on D11852

This introduces metric filters to be used by cloudwatch alarms later in the stack. Decided to use a for_each pattern so adding new identity alarms can be as easy as adding the pattern to `identity_error_patterns`. Depends on D11852