pjproject_bundled: Fix setting max log level

An earlier attempt to prevent pjsua from spitting out an extra 6795
lines of debug output every time the testsuite called it was also
turning off the ability for asterisk to output debug info when it
needed to.  This patch reverts the earlier fix and instead adds
a pjproject patch that sets the startup log level to 1 for pjsua
pjsystest and the pjsua python binding.  This is an asterisk-only
patch that does not affect pjproject functionality and will not be
submitted upstream.

Change-Id: I347a8b58b2626f2906ccfc1d339e907627a0c9e8