Spaces in ProcessType List

[coreyjadams]

When writing a configuration file in larcv, spaces aren't allow in the configuration list. If you do accidentally have spaces, you get output that looks like this:

[NORMAL]  <ProcessDriver::configure> Instantiating Process ID=0 Type: ProdEventMeta2D w/ Name: ProdEventMeta2D
[NORMAL]  <ProcessDriver::configure> Instantiating Process ID=1 Type:  "Cluster2DThreshold w/ Name:  "Cluster2DThreshold
 [ERROR]  <ProcessFactory::create::L71> Found no registered class  "Cluster2DThreshold

To be clear, the difference in the configuration file is between this correct version:
ProcessType: ["ProdEventMeta2D","Cluster2DThreshold"] ProcessName: ["ProdEventMeta2D","Cluster2DThreshold"]

and this incorrect version:
ProcessType: ["ProdEventMeta2D", "Cluster2DThreshold"] ProcessName: ["ProdEventMeta2D", "Cluster2DThreshold"]

I don't want to cause a lot of work, but I spent a long time looking to find out today why my new class, Cluster2DThreshold, wasn't getting registered, and only figured out the problem when I noticed the " in the ERROR message.

We should do one of the following:

• Implement better parsing to not complain about spaces
• Implement better error messages to tell the user to fix their configuration file and stop search their C++ code forever.