[CIPSEC] EIP security object ApplyConfig issues when dropping connections

Two issue are observed during a security deployment using FT Policy manager. 
1. FTPM sends an ApplyConfig request with parameters: Drop connections active and a delay of 3000mS. The behaviour of the stack is however not as the expected. netx triggers a connection shutdown, process the request, and sends a reply back. This causes timing prblem which the FTPM will not accept.
The correct behavior is to process the request, send a reply to FTPM then trigger a connection drop with a 3000 mS delay.

2. When dropping the connections, TLS/DTLS CcloseAllSessions functions itterates all connections and tries to close them independent of thier states. This behavior can harm the stack, because not all the TLS/DTLS connections are in use and the stack tries to close TCP connections which are already close.