[CA-39743] Wait for Xen to scrub host memory (only if necessary) before building a domain.
[CA-39743] Wait for Xen to scrub host memory (only if necessary) before building a domain.

Signed-off-by: Jonathan Knowles <47466d50a94574c6fb872a0e5feec104dcb68f29@eu.citrix.com>
Acked-by: Vincent Hanquez <39e98f98feb57282b4d40dce3a0734d8ff895375@eu.citrix.com>

guard163/xen-api,salvocambria/xen-api,salvocambria/xen-api,anoobs/xen-api,srowe/xen-api,huizh/xen-api,robertbreker/xen-api,guard163/xen-api,ravippandey/xen-api,anoobs/xen-api,cheng--zhang/xen-api,agimofcarmen/xen-api,djs55/xen-api,ravippandey/xen-api,rafalmiel/xen-api,koushikcgit/xen-api,thomassa/xen-api,salvocambria/xen-api,huizh/xen-api,ravippandey/xen-api,thomassa/xen-api,cheng-z/xen-api,thomassa/xen-api,agimofcarmen/xen-api,djs55/xen-api,rafalmiel/xen-api,euanh/xen-api,guard163/xen-api,anoobs/xen-api,srowe/xen-api,ravippandey/xen-api,koushikcgit/xen-api,cheng--zhang/xen-api,ravippandey/xen-api,huizh/xen-api,koushikcgit/xen-api,guard163/xen-api,robertbreker/xen-api,ravippandey/xen-api,cheng-z/xen-api,Frezzle/xen-api,koushikcgit/xen-api,euanh/xen-api,cheng-z/xen-api,srowe/xen-api,vasilenkomike/xen-api,jjd27/xen-api,koushikcgit/xen-api,cheng-z/xen-api,agimofcarmen/xen-api,cheng-z/xen-api,huizh/xen-api,rafalmiel/xen-api,rafalmiel/xen-api,robertbreker/xen-api,vasilenkomike/xen-api,cheng-z/xen-api,guard163/xen-api,Frezzle/xen-api,jjd27/xen-api,euanh/xen-api,huizh/xen-api,simonjbeaumont/xen-api,huizh/xen-api,robertbreker/xen-api,anoobs/xen-api,agimofcarmen/xen-api,vasilenkomike/xen-api,euanh/xen-api,jjd27/xen-api,thomassa/xen-api,rafalmiel/xen-api,robertbreker/xen-api,rafalmiel/xen-api,thomassa/xen-api,simonjbeaumont/xen-api,vasilenkomike/xen-api,djs55/xen-api,jjd27/xen-api,agimofcarmen/xen-api,koushikcgit/xen-api,djs55/xen-api,thomassa/xen-api,salvocambria/xen-api,robertbreker/xen-api,guard163/xen-api,anoobs/xen-api,cheng--zhang/xen-api,Frezzle/xen-api,jjd27/xen-api,simonjbeaumont/xen-api,Frezzle/xen-api,euanh/xen-api,euanh/xen-api,cheng--zhang/xen-api,simonjbeaumont/xen-api,srowe/xen-api,Frezzle/xen-api,srowe/xen-api,djs55/xen-api,salvocambria/xen-api,cheng--zhang/xen-api,anoobs/xen-api,salvocambria/xen-api,agimofcarmen/xen-api,vasilenkomike/xen-api,cheng--zhang/xen-api,djs55/xen-api,vasilenkomike/xen-api,jjd27/xen-api,cheng--zhang/xen-api,simonjbeaumont/xen-api,cheng-z/xen-api,simonjbeaumont/xen-api