Revert "Remove uwsgi by default"

This reverts commit 39aaeb3f32.

Change-Id: Ib607f3ecd5ada46ffe724fbc0d245d08f2a0fe01

pydep.txt

@@ -8,4 +8,4 @@ purestorage     [(cinder purestorage) (nova purestorage) requirements]
 pymysql         []
 python-ldap     [(keystone ldap)]
 python-memcached []
-uwsgi           [barbican]
+uwsgi           []

scripts/requirements.sh

@@ -88,9 +88,12 @@ if [ ! -z "${PIP_PACKAGES}" ]; then
   pip install ${PIP_ARGS} -c /upper-constraints.txt --no-cache ${PIP_PACKAGES}
 fi
 
+export UWSGI_PROFILE_OVERRIDE=ssl=true
+export CPUCOUNT=1
+
 # Build all dependencies in parallel. This is safe because we are
 # constrained on the version and we are building with --no-deps
-echo ${PIP_PACKAGES} | xargs -n1 | split -l1 -a3
+echo uwsgi enum-compat ${PIP_PACKAGES} | xargs -n1 | split -l1 -a3
 if [[ "$KEEP_ALL_WHEELS" == "False" ]]; then
   ls -1 | xargs -n1 -P20 -t bash -c 'pip wheel ${PIP_WHEEL_ARGS} --find-links /source-wheels --find-links / --no-deps --wheel-dir / -c /upper-constraints.txt -r $1 || cat $1 >> /failure' _ | tee /tmp/wheels.txt
   # Remove native-binary wheels, we only want to keep wheels that we