Do a fail fast if there are pip install issues

The script quickstart.sh was not failing
at the pip install line, adding a check of the
rc after the () block and returnig the same rc.

Depends-On: I9d561aa2e2f71b8892580950e9664d62f956773d

Change-Id: Ib7a46e4c15a93c62bdde66495030e4734728a890
Closes-Bug: 1708986

quickstart.sh

@@ -150,6 +150,11 @@ bootstrap () {
         fi
     popd
     )
+    bootstrap_rc=$?
+    if [ $bootstrap_rc -ne 0 ]; then
+        return $bootstrap_rc
+    fi
+
     # In order to do any filesystem operations on the system running ansible (if it has SELinux intalled)
     # we need the python bindings in the venv. Unfortunately, it is not available on pypi, so we need to
     # pull it from the system site packages.