CFY-1184 init boto client using credentials from config file
CFY-1184 init boto client using credentials from config file

isaac-s/cloudify-system-tests,cloudify-cosmo/cloudify-system-tests,codilime/cloudify-system-tests,isaac-s/cloudify-system-tests,cloudify-cosmo/cloudify-system-tests,isaac-s/cloudify-system-tests,codilime/cloudify-system-tests,codilime/cloudify-system-tests