validate: launcher: Add debug message and fix typo

Add messages to clearly see why test was excluded.
And fix typo prerrol
24 jobs for !160 with media-check in 16 seconds (queued for 2 seconds)
latest detached
Status Job ID Name Coverage
  Preparation
passed #2867617
gst indent

00:00:16

manual #2867615
manual
manifest
 
  Build
created #2867635
gstreamer
build cerbero cross-android universal
created #2867640
gst-ios-13.2
build cerbero cross-ios universal
created #2867637
gstreamer
build cerbero cross win32
created #2867638
gstreamer
build cerbero cross win64
created #2867632
gstreamer
build cerbero fedora x86_64
created #2867639
gst-macos-10.15
build cerbero macos x86_64
created #2867623
build clang fedora x86_64
created #2867630
1809 windows docker allowed to fail manual
build msys2
created #2867619
build nodebug fedora x86_64
created #2867620
build static fedora x86_64
created #2867622
build static nodebug fedora x86_64
created #2867625
1809 windows docker
build vs2017 amd64
created #2867627
1809 windows docker
build vs2017 x86
 
  Test
created #2867641
gstreamer
check fedora
created #2867642
gstreamer
integration testsuites fedora 1/4
created #2867643
gstreamer
integration testsuites fedora 2/4
created #2867644
gstreamer
integration testsuites fedora 3/4
created #2867645
gstreamer
integration testsuites fedora 4/4
created #2867646
gstreamer
valgrind ges
 
  Integrate
created #2867647
cross-android universal examples
created #2867649
gst-ios-13.2
cross-ios universal examples
created #2867648
documentation