Update workspace dir path, write coordinates into workspace

Workspace dir is now ~/.jgo/${groupId}/${artifactId}/${version}/hash
Coordinates are written into workspace as coordinates.txt

jgo/jgo.py

@@ -484,10 +484,10 @@ def coordinates_from_endpoints(endpoints):
 
 
 def workspace_dir_from_coordinates(coordinates, cache_dir):
-    workspace = os.path.join(cache_dir, *coordinates[0])
-    coord_string = '+'.join(['-'.join(c) for c in coordinates[1:]])
+    coord_string = '+'.join(['-'.join(c) for c in coordinates])
     hash_path = hashlib.sha256(coord_string.encode('utf-8')).hexdigest()
-    workspace = '+'.join([workspace, hash_path])
+    workspace = os.path.join(cache_dir, *coordinates[0], hash_path)
+
     return workspace
 
 
@@ -545,6 +545,11 @@ def resolve_dependencies(endpoint_string,
 
     os.makedirs(workspace, exist_ok=True)
 
+    # Write a file with the coordinates into the workspace dir
+    with open(os.path.join(workspace, 'coordinates.txt'), 'w') as f:
+        for coordinate in coordinates:
+            f.write(''.join(['+'.join(coordinate)] + ['\n']))
+
     # TODO should this be for all endpoints or only the primary endpoint?
     if manage_dependencies:
         dependency_management = '<dependency><groupId>{g}</groupId><artifactId>{a}</artifactId><version>{v}</version>'.format(