fota: Modify condition of upgrade state transition

fota: Modify condition of upgrade state transition

upgrade-manager service checks if upgrade is completed at the
initialization time and if upgrade is completed, then transition the
upgrade state from "ready" to "completed".

The transition condition is:
 * upgrade status progress is 100
 * boot mode is "normal"

But if upgrade is performed as 'online' mode, the boot mode(which is
parsed from the /proc/cmdline) is "fota".

To make upgrade state be transitioned to "completed", condition is
modified:
 * upgrade status progress is 100
 * (boot mode is "normal")
    or
   (boot mode is "fota" and upgrade type is "online")

Change-Id: I6d284f135df863c991bc8c08f75d6fa6e2b07ab5
Signed-off-by: SangYoun Kwak <sy.kwak@samsung.com>