THH.PyRPC: hide Prelude's <>
THH.PyRPC: hide Prelude's <>

In base-4.11, Prelude exports Semigroup's (<>) which conflicts with
Text.PrettyPrint's (<>). Resolve this by hiding the former.

This commit contains the final bits to fix #1312.

Signed-off-by: Apollon Oikonomopoulos <ed81ed0a45ccd5c8869bda52e38353a6299ee39e@debian.org>
(cherry picked from commit f5bf20e0769dbaa761e82a374697224e86bedfe4)

mbakke/ganeti,ganeti/ganeti,mbakke/ganeti,ganeti/ganeti,mbakke/ganeti,ganeti/ganeti