Haskell RPCs can now differ in parameters
Haskell RPCs can now differ in parameters

The Haskell interface allowed multi-node RPCs to be executed in
parallel, but with the same parameters every time. This restriction
is now lifted by providing a function call accepting pairs of nodes
and parameters.

Signed-off-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>
Reviewed-by: Jose A. Lopes <0fb9c4f8511df4ec2ae28af879e9d462f6218a2c@google.com>

apyrgio/ganeti,leshchevds/ganeti,andir/ganeti,ganeti/ganeti,leshchevds/ganeti,mbakke/ganeti,ganeti-github-testing/ganeti-test-1,yiannist/ganeti,grnet/snf-ganeti,apyrgio/ganeti,leshchevds/ganeti,mbakke/ganeti,dimara/ganeti,andir/ganeti,grnet/snf-ganeti,bitemyapp/ganeti,ganeti-github-testing/ganeti-test-1,ganeti/ganeti,yiannist/ganeti,onponomarev/ganeti,andir/ganeti,yiannist/ganeti,dimara/ganeti,ganeti/ganeti,bitemyapp/ganeti,mbakke/ganeti,onponomarev/ganeti