Provide ability to set token expiration in PortalContentPost.py

May or may not this for TEM release. Kerry encountered an issue with generating token . At first thought it was an issue with the publishing taking so long that the token expired, but this looks like it was a problem with an invalid password causing the token generation to fail. Still might be a good idea to provide a way to set the token expiration.

Another option would be to just modify the default expiration value in the init function in the PortalPy module; currently set to 60 minutes.

Start by reading PortalContentPost.py and the PortalPy module's init function, where the current 60-minute default expiration is mentioned. Determine whether the intended change is a configurable expiration for token generation or only a new default; done means the chosen behavior is implemented and token creation still works with the selected expiration.

Written by the indexing model from the issue text.