qemuDomainBlockPivot: Rename 'actions' to 'bitmapactions'
qemuDomainBlockPivot: Rename 'actions' to 'bitmapactions'

There are two possible 'transaction' command arguments in the function.
Rename 'actions' as they deal with creating bitmaps only.

Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Reviewed-by: Eric Blake <a9da18479c871fe903d9590822cfe2629c6a4d11@redhat.com>

olafhering/libvirt,olafhering/libvirt,zippy2/libvirt,jardasgit/libvirt,olafhering/libvirt,jardasgit/libvirt,jfehlig/libvirt,jfehlig/libvirt,nertpinx/libvirt,libvirt/libvirt,libvirt/libvirt,jardasgit/libvirt,zippy2/libvirt,nertpinx/libvirt,libvirt/libvirt,zippy2/libvirt,zippy2/libvirt,crobinso/libvirt,nertpinx/libvirt,jfehlig/libvirt,nertpinx/libvirt,crobinso/libvirt,jfehlig/libvirt,jardasgit/libvirt,jardasgit/libvirt,olafhering/libvirt,nertpinx/libvirt,crobinso/libvirt,crobinso/libvirt,libvirt/libvirt