The directory for this deployments is set in the file (in your case, change <installdir> for /opt/bitnami):
Here, there is a line like this:
And this is the directory where you have to copy the files to deploy. But, you should not change the owner of this directory because it was already set to the proper value. You can copy any file on it with "sudo cp <path_to_the_file> <destination_path>".
I am not sure if you must change the ownership of the file to deploy to the same that the folder. But, in any case, you can check your <installdir>/apache-tomcat/logs/catalina.out file to check if there is something wrong.
I hope this helps you. If not, please, come back and post here the errors shown in the catalina.out file. Regards.