BLE Host - gap test needs to hb when checking tmo.
BLE Host - gap test needs to hb when checking tmo.

When ensuring that the passage of time causes no effects, the test node
needs to call ble_hs_heartbeat() to let the host know that time has
passed.  This is only necessary because the OS is not running during
this test.

X-Original-Commit: f1020d3e60b743d1784a5225ae9b57a07e5cebf0

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble