#2815 dtm: Missing error check of osaflog argument values

[Anders Widell]

osaflog does not properly validate its argument values. In addition, there is a type mis-match since osaflog argument values are parsed as type int, but osaftransportd expects values of type size_t.

# osaflog --max-file-size=abcd
# osaflog --max-file-size=9999999999999999999999999999999999
# osaflog --max-file-size=-2
ERROR: osaftransportf replied '!max-file-size 18446744073709551615'
# 

[Anders Widell]

commit b3c8028c3312ffe13c815dbe0249947a5c4947dc (HEAD -> develop, origin/develop)
Author: Anders Widell an..@..com
Date: Tue Mar 27 16:25:39 2018 +0200

dtm: Use base::StrToUint64 to parse command-line option arguments [#2815]

Use the function base::StrToUint64 to pass command-line option arguments. This
gives us error checking, and support for the k, M and G suffixes.