Parse context for the new format

- mycontext: => mycontext

[GF-6227] pmlogdaemon: Modify context name parsing ...

Open-webOS-DCO-1.0-Signed-off-by: Hongjeon Ha <hj.ha@lge.com>

Change-Id: I461040f10912537b0887232a41abe33ad322e57e
Reviewed-on: https://g2g.palm.com/2240
Reviewed-by: Hongjeon Ha <hj.ha@lge.com>
Tested-by: Hongjeon Ha <hj.ha@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Gayathri Srinivasan <gayathri.srinivasan@lge.com>