Increase the default LRO timeout value

[blakeli0]

The current default total LRO timeout value is 300s, see an example in java-aiplatform. This default value is fine for most of the cases, but it is too short for some tasks that is known to be run for 10+ minutes, like DeployModel, and we are getting more customers complaining about it.

Currently C++ has a default value of 1800s and C# has 24 hours, we need to do more investigation and decide what's the best value for Java.