Incorrect use of np.logical_and/or in Connection ProcessModels

[gkarray]

Objective of issue: Incorrect use of np.logical_and and np.logical_or was discovered in learning-related code in Connection ProcessModels.

Lava version:

• [ ] 0.6.0 (feature release)
• [ ] 0.5.1 (bug fixes)
• [x] 0.5.0 (current version)
• [ ] 0.4.1
• [ ] 0.4.0
• [ ] 0.3.0
• [ ] 0.1.2

I'm submitting a ...

• [x] bug report
• [ ] feature request
• [ ] documentation request

Current behavior:

• Currently, to implement and and or element-wise operations on 3 np.ndarray (example : a, b and c), the following is used : np.logical_and(a, b, c)

Expected behavior:

• It should be implemented like this : np.logical_and(np.logical_and(a, b), c) or a & b & c