KeyStore: Define key lifetime thresholds
KeyStore: Define key lifetime thresholds

Define MIN, MAX and INF thresholds for ft_key_lifetime.
Also, increase default lifetime to 30 minutes.

Change-Id: I6a6e60d92f98d0107ef1d31290419d8b3f8584fb

secure-endpoints/netidmgr,secure-endpoints/netidmgr,secure-endpoints/netidmgr,secure-endpoints/netidmgr,secure-endpoints/netidmgr