[Blueprint servercloud-p-arm-openmpi] Update OpenMPI to the 1.5 version with ARM support

[Dave Walker]

Blueprint changed by Dave Walker:

Whiteboard changed:
   Nothing to discuss, we just either update the existing one or add another package version into the archive. -robbie.w
  Added a bug task to track activity. -- Daviey
  
  There seems to have been some rudimentary support for ARM added in the
  past (https://bugs.launchpad.net/ubuntu/+source/openmpi/+bug/438433).
  What exactly is the functionality/use case that we need to add, and how
  would I verify that it is complete? --rbasak
+ 
+ rbasak, lets discuss it in a regular meeting - can you raise it please?
+ Thanks -- Daviey

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Update OpenMPI to the 1.5 version with ARM support
https://blueprints.launchpad.net/ubuntu/+spec/servercloud-p-arm-openmpi