Fix travis tests (#205)

* Fix engine specific properties for engine config location
* Temporarily add engine configs to test resources for the boot modules.  Will need to fix this properly

alfresco-transform-pdf-renderer/alfresco-transform-pdf-renderer-boot/src/test/resources/pdfrenderer_engine_config.json

@@ -0,0 +1,23 @@
+{
+  "transformOptions": {
+    "pdfRendererOptions": [
+      {"value": {"name": "page"}},
+      {"value": {"name": "width"}},
+      {"value": {"name": "height"}},
+      {"value": {"name": "allowPdfEnlargement"}},
+      {"value": {"name": "maintainPdfAspectRatio"}}
+    ]
+  },
+  "transformers": [
+    {
+      "transformerName": "pdfrenderer",
+      "supportedSourceAndTargetList": [
+        {"sourceMediaType": "application/pdf",                            "targetMediaType": "image/png" },
+        {"sourceMediaType": "application/illustrator",                    "targetMediaType": "image/png" }
+      ],
+      "transformOptions": [
+        "pdfRendererOptions"
+      ]
+    }
+  ]
+}