Make patch-bmc use sudo
Make patch-bmc use sudo

This commit changes the patch-bmc script to use sudo to execute
commands on the remote machine. This is because when executing a
command with ssh using service accounts, the user doesn't have
permissions to write the file locations necessary to patch the system.

Change-Id: I951878064828e26be397c67c6781952301f4905b
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/128959
Reviewed-by: Deborah L McLemore <1938e6bc52a6fb400ff401d42bc5360c2c7aaa30@us.ibm.com>
Reviewed-by: Matt Derksen <7e9f2fc2ed13c4ee3c2ab17f188630a0f557de86@us.ibm.com>
Reviewed-by: Isaac Salem <c69ff4695291efa8bfa4efde6e5e177cdf719186@ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Matthew Raybuck <9bcecd56bb1097e934e4548e2b924569df303f40@ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: Jenkins Combined Simics CI <8312af3886dfc9bb930f549023677220805b137e@us.ibm.com>
Tested-by: Jenkins OP HW <0eb0fff262f74a65a832afbcc7b153e391c9a3fd@us.ibm.com>
Tested-by: Hostboot CI <52521565bd8ea18a2b112942dce4f4220a97c2c8@us.ibm.com>
Reviewed-by: Daniel M Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot