glupload: Fix for wrongly recognized reconfigure condition

gst_gl_upload_transform_caps() method might return non-fixed
caps (texture-target for example) but priv->out_caps is fixed one
so the former (non-fixed caps) is superset.
34 jobs for glupload-reconfigure in 35 seconds (queued for 4 seconds)
latest
Status Job ID Name Coverage
  Build Docker
passed #4682615
alpine amd64 manifest builder docker

00:00:25

passed #4682614
android docker

00:00:26

passed #4682613
cerbero fedora amd64 docker

00:00:24

passed #4682612
fedora amd64 docker

00:00:25

passed #4682616
gst-indent amd64 docker

00:00:25

 
  Preparation
passed #4682618
gst indent

00:00:08

manual #4682617
manual
manifest
 
  Build
created #4682627
gstreamer
build cerbero cross-android universal
created #4682631
gst-ios-13.2
build cerbero cross-ios universal
created #4682628
gstreamer
build cerbero cross win32
created #4682629
gstreamer
build cerbero cross win64
created #4682626
gstreamer
build cerbero fedora x86_64
created #4682630
gst-macos-10.15
build cerbero macos x86_64
created #4682632
1809 gstreamer-windows windows docker
build cerbero msvc x86_64
created #4682622
build clang fedora x86_64
created #4682625
1809 windows docker allowed to fail manual
build msys2
created #4682619
build nodebug fedora x86_64
created #4682620
build static fedora x86_64
created #4682621
build static nodebug fedora x86_64
created #4682623
1809 windows docker
build vs2017 amd64
created #4682624
1809 windows docker
build vs2017 x86
 
  Test
created #4682633
gstreamer
check fedora
created #4682634
gstreamer
integration testsuites fedora 1/4
created #4682635
gstreamer
integration testsuites fedora 2/4
created #4682636
gstreamer
integration testsuites fedora 3/4
created #4682637
gstreamer
integration testsuites fedora 4/4
created #4682641
gstreamer
valgrind bad
created #4682638
gstreamer
valgrind base
created #4682642
gstreamer
valgrind ges
created #4682639
gstreamer
valgrind good
created #4682640
gstreamer
valgrind ugly
 
  Integrate
created #4682643
cross-android universal examples
created #4682645
gst-ios-13.2
cross-ios universal examples
created #4682644
documentation