ci: update test inclusions in sonar scan

Signed-off-by: Arjun Rajappa <Arjun.Rajappa@ibm.com>

Author: arjun-rajappa

sonar-project.properties

@@ -4,6 +4,7 @@ sonar.projectName=python-sensor
 sonar.sourceEncoding=utf-8
 sonar.sources=src/instana/
 sonar.tests=tests/
+sonar.test.inclusions=test/**/*
 sonar.python.coverage.reportPaths=coverage.xml
 sonar.python.version=3
 sonar.links.homepage=https://github.com/instana/python-sensor/