[CSE] Basic CI tests

[Stevengre]

• CSE CI tests without minimization and merging node. close default kcfg minimization 4 cse #885
• CSE CI test for minimization;
• CSE CI test for CSE with minimization;
• CSE CI test for merging node;
• CSE CI test for CSE with merging node.

[Stevengre]

• Compare the time with / without CSE / minimization / merging node.