Updates to import statements:

- Import importlib, os, and sys to each python script.
 - Append "lanforge-scripts" root directory to the system path, allowing each script to be called from an antecedent directory. e.g.
if 'lanforge-scripts' not in sys.path:
    sys.path.append(os.path.join(os.path.abspath(__file__ + "../../../../../")))
 - All statements of the form 'from <module> import <class>' replace with:
<module> = importlib.import_module("lanforge-scripts.<directory>.<module>")
<class> = <module>.<class>

py-scripts/wlan_capacity_calculator.py

@@ -5,18 +5,17 @@ Info : Standard Script for WLAN Capacity Calculator
 Date :
 Author : Anjali Rahamatkar
 '''
-
-import argparse
 import sys
 import os
-
+import importlib
+import argparse
 from pip._internal.utils import logging
 
-if 'py-json' not in sys.path:
-    sys.path.append(os.path.join(os.path.abspath('..'), 'py-json'))
-import wlan_theoretical_sta
+if 'lanforge-scripts' not in sys.path:
+    sys.path.append(os.path.join(os.path.abspath(__file__ + "../../../../")))
+
+wlan_theoretical_sta = importlib.import_module("lanforge-scripts.py-json.wlan_theoretical_sta")
 
-# main method
 
 def main():
 
@@ -248,4 +247,4 @@ def main():
 
 
 if __name__ == "__main__":
-    main()
+    main()