Updated Manual FUEL Installation Instruction for ARNO SR1

Updated Manual FUEL Installation Instruction for ARNO SR1
 - updated to reflect FUEL updates (MOS 6.1)
 - updated to reflect ODL plugin usage and steps
 - updated to reflect Local Repo option
 - cleaned up old references to Health and ODL setup
 - Minor Formatting Adjustments
 - fixed whitespace and some editing.
 - more whitespaces for Jonas fixed
 - added comment about Live Migration Test case
 - fixes user/pwd for ODL GUI
 - fixed URL for DLUX login

Change-Id: I659e2013a62c8a1eb2a6c2d650d0b8c47f04046f
JIRA:FUEL-11
Signed-off-by: Daniel Smith <daniel.smith@ericsson.com>
(cherry picked from commit e686723887f8e41683b317f2254664f52e2ec2fa)