core: cleanup - Fix InActive typo

Inactive is one word. Changed InActive usages to Inactive throughout the
system, mainly in StorageDomainStatus & StorageDomainSharedStatus enums.

Change-Id: I3683e31ffa6965a6eef91a4eb52ae8bab4703fd2
Signed-off-by: Vered Volansky <vvolansk@redhat.com>