Split roles_path on colon separators and use the first path for the installation path

bin/ansible-galaxy

@@ -198,6 +198,9 @@ def get_opt(options, k, defval=""):
         data = getattr(options, k)
     except:
         return defval
+    if k == "roles_path":
+        if ":" in data:
+            data = data.split(':')[0]
     return data
 
 def exit_without_ignore(options, rc=1):