Add noseopts and replace noseargs where needed to run_test.sh

Add of noseopts to the run_tests script so users can be
able to run tests adding extra options to be passed to
nosetests.
This option is currently in keystone but not in glance.
Fixes bug 1065758

Change-Id: I7c78749adb90b126da5bd9580da6bfd7c9e1bf54

run_tests.sh

@@ -24,8 +24,9 @@ function process_option {
     -N|--no-virtual-env) let always_venv=0; let never_venv=1;;
     -p|--pep8) let just_pep8=1;;
     -f|--force) let force=1;;
-    --unittests-only) noseargs="$noseargs --exclude-dir=glance/tests/functional";;
-    -c|--coverage) noseargs="$noseargs --with-coverage --cover-package=glance";;
+    --unittests-only) noseopts="$noseopts --exclude-dir=glance/tests/functional";;
+    -c|--coverage) noseopts="$noseopts --with-coverage --cover-package=glance";;
+    -*) noseopts="$noseopts $1";;
     *) noseargs="$noseargs $1"
   esac
 }
@@ -35,6 +36,7 @@ with_venv=tools/with_venv.sh
 always_venv=0
 never_venv=0
 force=0
+noseopts=
 noseargs=
 wrapper=""
 just_pep8=0
@@ -67,7 +69,7 @@ function run_pep8 {
 }
 
 
-NOSETESTS="nosetests $noseargs"
+NOSETESTS="nosetests $noseopts $noseargs"
 
 if [ $never_venv -eq 0 ]
 then