Allow trailing non-alphanumeric character in path params (#386)

Updating parsing for $gatewayPath in allow for trailing non-alphanumeric characters in path parameters.
diff --git a/conf.d/managed_endpoints.conf b/conf.d/managed_endpoints.conf
index cf601ba..1954ffb 100644
--- a/conf.d/managed_endpoints.conf
+++ b/conf.d/managed_endpoints.conf
@@ -57,7 +57,7 @@
         ';
     }
 
-    location ~ "^/api/([a-zA-Z0-9\-]+)/([a-zA-Z0-9\-\/\.\_\{\} ]+)(\\b)" {
+    location ~ "^/api/([a-zA-Z0-9\-]+)/([a-zA-Z0-9\-\/\.\_\{\} ]*[a-zA-Z0-9\-\/\.\_\{\}])" {
         set $upstream https://172.17.0.1;
         set $tenant $1;
         set $tenantNamespace '';