* Move SF dependencies to the latest BUILD-SNAPSHOT
To avoid class loader issues it is better to align Spring Data
dependencies with SF version we use explicitly.
This way we don't have a `ClassLoader` issue when a newly introduced
`TransactionManager` might not be visible from the previous versions
* Fix code style warnings in the `TransactionSynchronizationFactoryBean`
* Use `JavaUtils` in the `TransactionSynchronizationFactoryBean` to
decrease code complexity
* * Fix CQ Gemfire tests for upgrades compatibility
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