Give concourse more posix env for running saml2-web-sso unit tests.

Author: fisx

.envrc

@@ -71,5 +71,8 @@ export AWS_SECRET_ACCESS_KEY="dummysecret"
 # integration test suite timeout
 export TEST_TIMEOUT_SECONDS=2
 
+# saml2-web-sso needs this special thing
+export SAML2_WEB_SSO_ROOT="$PWD/libs/saml2-web-sso"
+
 # allow local .envrc overrides
 [[ -f .envrc.local ]] && source_env .envrc.local