[STORM-3792] Change forkCount from 1 to 1.0C and reuseForks=false

[bipinprasad]

What is the purpose of the change

When JVM is reused in test threads, changed to singleton classes will persist and may interfere yield incorrect test results. Change the default behavior to fork a new JVM. Places where the forkCount was set to 1, change it to 1.0C so that one JVM thread is created per available CPU.

How was the change tested

Run tests