travis.ci: enable ctest_output_on_failure

gcontini

2020-04-26 b01f4512ae3aa25426cb84758a791478ab68d5d7

 .gitignore

@@ -9,6 +9,7 @@

#Visual studio files
.vs
/out

# Compiled Static libraries
*.lai
@@ -28,6 +29,9 @@
*.out
/Default/

product/*
!product/.gitkeep
projects/*
!projects/.gitkeep

**/CMakeCache.txt
**/CMakeFiles
/CMakeSettings.json