gstvaapiencoder_h264: add ENCODER_EXPOSURE on aud propertie

forgot during the following mainline commit: gstreamer/gstreamer-vaapi@bc2f8fd1#

Signed-off-by: Paul Goulpié <paul.goulpie@ubicast.eu>
Part-of: <gstreamer/gstreamer-vaapi!416>
17 jobs for !416 with backport-mr-415-into-1.18-gstvaapiencoder_h264-append-ENCODER_EXPOSURE-to-aud in 26 minutes and 11 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Build Docker
passed #7652369
alpine amd64 manifest builder docker

00:00:45

passed #7652368
android docker

00:00:45

passed #7652367
cerbero fedora amd64 docker

00:00:17

passed #7652366
fedora amd64 docker

00:00:15

passed #7652370
gst-indent amd64 docker

00:00:44

 
  Preparation
passed #7652372
gst indent

00:00:13

passed #7652371
manifest

00:00:21

 
  Build
passed #7652376
build clang fedora x86_64

00:09:13

passed #7652373
build nodebug fedora x86_64

00:08:15

passed #7652374
build static fedora x86_64

00:08:16

passed #7652375
build static nodebug fedora x86_64

00:08:17

 
  Test
passed #7652377
gstreamer
check fedora

00:08:38

passed #7652378
gstreamer
integration testsuites fedora 1/4

00:16:19

passed #7652379
gstreamer
integration testsuites fedora 2/4

00:19:06

passed #7652380
gstreamer
integration testsuites fedora 3/4

00:17:39

passed #7652381
gstreamer
integration testsuites fedora 4/4

00:16:59

 
  Integrate
passed #7652382
documentation

00:13:38