CA-111876: XenCenter displays an empty Summary page on cancelling the reattachment of HBA SR.

Moved LMVoHBA related code from UpdateWizardContent() method to CanShowLVMoHBASummaryPage() method which is called from RunNextPagePrecheck() method now: the code prepares all lvmohbaSrDescriptors for each LUN selected by the user and executes RunFinalAction() method.

Signed-off-by: Adrian Jachacy <Adrian.Jachacy@citrix.com>
Merge branch 'master' of git://hg.uk.xensource.com/carbon/trunk/xenadmin