wpa_supplicant : PSK configuration parameter update allowing arbitrary data to be...

wpa_supplicant : PSK configuration parameter update allowing arbitrary data to be written

This commit is patch for mitigation security vulnerability on wpa_supplicant
 - https://w1.fi/security/2016-1/

    Remove newlines from wpa_supplicant config network output

    Spurious newlines output while writing the config file can corrupt the
    wpa_supplicant configuration. Avoid writing these for the network block
    parameters. This is a generic filter that cover cases that may not have
    been explicitly addressed with a more specific commit to avoid control
    characters in the psk parameter.

Change-Id: I7c4d6ac0bb0fbc34225a03690034cd0e429a44cf
Signed-off-by: Jin-Seong Kim <jseong82.kim@samsung.com>