When printing recipe repro instructs, don't print "u" unicode string prefix.
When printing recipe repro instructs, don't print "u" unicode string prefix.

In the local repro instructions (which are quite helpful by the way), it was adding was adding python unicode string "u" prefixes, e.g. mastername=u'tryserver.chromium.linux'

The quotes are then eaten by bash, which means that the arg mastername=utryserver.chromium.linux is passed to run_recipe.py.

Example:

http://build.chromium.org/p/tryserver.chromium.linux/builders/bisect_builder/builds/1/steps/setup_build/logs/run_recipe

BUG=

Review URL: https://codereview.chromium.org/498053002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@291814 0039d316-1c4b-4281-b951-d872f2087c98

luci/recipes-py,shishkander/recipes-py,shishkander/recipes-py,luci/recipes-py