Remove datasource autowiring in AbstractBatchConfiguration #4103
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Before this commit, the datasource was autowired in
AbstractBatchConfiguration. This was causing context
startup failures when no datasource or more than one
datasource is present in the context.
This commit fixes these failures by looking for the
datasource in the application context. This also
prevents cyclic configuration dependencies when
the datasource bean is defined in the same class where
other batch artifacts are autowired.
Issue #3991