[ACS4.4] cherry pick commit 608500c107f5bbffdb453c00f0f5038243295197

[Sanjay Tripathi]

Hi Daan,

Could you please cherry-pick following commit to 4.4 branch.

Commit: 608500c107f5bbffdb453c00f0f5038243295197

CLOUDSTACK-6494: Typing a pipe '|' character in VM console returns a question 
mark and pipe '?|'.

--Sanjay