info.yml file is tested twice when running testflow

[Valerio-Perez]

Issue description

Test environment

• x86
• powter-client version: 0.4.10

info file

How to reproduce

wget https://github.com/hilanderas/powter-client/releases/download/0.4.9/powter-client-testflow-0.4.10.zip
unzip powter-client-testflow-0.4.10.zip
cd powter-client-testflow
make -f main.mk download ARCH=x86
make -f main.mk config TEST_PROJ=$PWD/powter-client-x86 TEST_INFO=$PWD/info.yml IFACE=enp2s0
make -f function.mk test_install

Actual results

The test of info.yml existence shows twice

Expected results

The test shows once or print some hints to tell user why it test twice.