Retry logic for prepared statements

[TobiasSQL]

https://github.com/Microsoft/mssql-jdbc/blob/a64b9ef50076ab42eba898d76ae45db27ad24c45/src/main/java/com/microsoft/sqlserver/jdbc/SQLServerPreparedStatement.java#L568

@cheenamalhotra

With the re-introduction of retry logic for prepared statements we should not retry if the statement needs to be prepared. For some reason this was removed late in pr #618 and needs to be put back.

I.e. for retryBasedOnFailedReuseOfCachedHandle pass needsPrepare and return false if needsPrepare is true.

[TobiasSQL]

In addition, the check for error number 99586 should be removed from the same method.

[cheenamalhotra]

Hi @TobiasSQL

Created PR #629 - kindly review.

[TobiasSQL]

Cool, started review.

[cheenamalhotra]

Closing issue as requested changes merged to driver.