More cleanup in install_euca
More cleanup in install_euca

Change-Id: Ib1668ad1702d4cedefd6818dcba7f7050c2efba1

nagyistoce/eutester,nephomaniac/eutester,nephomaniac/nephoria,tbeckham/eutester,nagyistoce/eutester,sjones4/eutester,nagyistoce/eutester,tbeckham/eutester,tbeckham/eutester,sjones4/eutester,shaon/eutester,nephomaniac/nephoria,shaon/eutester,shaon/eutester,nagyistoce/eutester,shaon/eutester,nephomaniac/eutester,sjones4/eutester,sjones4/eutester,tbeckham/eutester,nephomaniac/eutester