[release] Prepare for next development iteration

Change-Id: I5f870d89b18c8139db0d6039c5fe703138f48ac0
Refactored HttpEndpoint (GET or POST) objects

Change-Id: I6bab820d1e33e18aed4da32d3a4e990c5ac211c6
[release] 4.2.1

Change-Id: I6d7d7a37e40d594723025482ba6586d8c44f6e38