PATH-routing: url was not escaped correctly

If PATH routing was defined, the uri was not escaped correctly so the
mapping rules will not work as expected.

Reported by: Carlo Palmiari <cpalmier@redhat.com>
Fix: THREESCALE-3468
Related-to:112fdfa502483983b462fb82a5e789003ab9f750

Signed-off-by: Eloy Coto <eloy.coto@gmail.com>

gateway/src/apicast/policy/find_service/path_based_finder.lua

@@ -1,12 +1,13 @@
 local mapping_rules_matcher = require 'apicast.mapping_rules_matcher'
+local escape = require("resty.http.uri_escape")
 
 local _M = {}
 
 function _M.find_service(config_store, host)
   local found
   local services = config_store:find_by_host(host)
   local method = ngx.req.get_method()
-  local uri = ngx.var.uri
+  local uri = escape.escape_uri(ngx.var.uri)
 
   for s=1, #services do
     local service = services[s]

t/apicast-path-routing.t

@@ -213,3 +213,70 @@ Host: one
 --- error_code: 404
 --- no_error_log
 [error]
+
+=== TEST 4: multi service configuration with path based routing and special chars (spaces)
+--- env eval
+('APICAST_PATH_ROUTING' => '1')
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "backend_version": 1,
+      "proxy": {
+        "api_backend": "http://test:$TEST_NGINX_SERVER_PORT/api-backend/foo/",
+        "hosts": [
+          "same"
+        ],
+        "backend_authentication_type": "service_token",
+        "backend_authentication_value": "service-one",
+        "proxy_rules": [
+          {
+            "pattern": "/one/{test}",
+            "http_method": "GET",
+            "metric_system_name": "one",
+            "delta": 1
+          }
+        ]
+      }
+    },
+    {
+      "id": 21,
+      "backend_version": 2,
+      "proxy": {
+        "api_backend": "http://test:$TEST_NGINX_SERVER_PORT/api-backend/bar/",
+        "hosts": [
+          "same"
+        ],
+        "backend_authentication_type": "service_token",
+        "backend_authentication_value": "service-two",
+        "proxy_rules": [
+          {
+            "pattern": "/two/%20two",
+            "http_method": "GET",
+            "metric_system_name": "two",
+            "delta": 2
+          }
+        ]
+      }
+    }
+  ]
+}
+--- backend
+  location /transactions/authrep.xml {
+    content_by_lua_block { ngx.exit(200) }
+  }
+--- upstream
+  location ~ /api-backend(/.+) {
+     echo 'yay, api backend: $1';
+  }
+--- request eval
+["GET /one/12%2012?user_key=one-key", "GET /two/%20two?app_id=two-id&app_key=two-key"]
+--- more_headers eval
+["Host: same", "Host: same"]
+--- response_body eval
+["yay, api backend: /foo/one/12 12\x{0a}", "yay, api backend: /bar/two/ two\x{0a}"]
+--- error_code eval
+[200, 200]
+--- no_error_log
+[error]