Enable oslo.limit to be installed from git repo

oslo.limit isn't currently in the list of libraries that can be
installed from a git repo via LIBS_FROM_GIT.

This adds oslo.limit to enable integrated testing against unmerged
oslo.limit changes.

Change-Id: I26cc567fdf4c84014040ae586bbb029b8de7a236
diff --git a/tests/test_libs_from_pypi.sh b/tests/test_libs_from_pypi.sh
index ce1b344..839e3a1 100755
--- a/tests/test_libs_from_pypi.sh
+++ b/tests/test_libs_from_pypi.sh
@@ -45,6 +45,7 @@
 ALL_LIBS+=" keystoneauth ironic-lib neutron-lib oslo.privsep"
 ALL_LIBS+=" diskimage-builder os-vif python-brick-cinderclient-ext"
 ALL_LIBS+=" castellan python-barbicanclient ovsdbapp os-ken os-resource-classes"
+ALL_LIBS+=" oslo.limit"
 
 # Generate the above list with
 # echo ${!GITREPO[@]}