use config file ngcp-schema/share/test.conf for testing

for NGCP::Schema
we activate this behaviour by setting the environment variable
NGCP_PANEL_CONFIG_LOCAL_SUFFIX to "testing" which is a feature
from Catalyst::Plugin::ConfigLoader
Use JUnit output by default with ./Build test

to not interfere with the JUnit output the panel output is redirected to a file
increase panel starting timeout

using ./Build test