audioaggregator: Split getcaps() function into two

One for convert pads and one for normal sink pads.
22 jobs for audioaggregator-getcaps in 44 minutes and 6 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Preparation
passed #429775
gst indent

00:01:31

passed #429774
manifest

00:00:38

 
  Build
passed #429781
build cerbero android universal

00:17:10

passed #429782
build cerbero cross win32

00:08:56

passed #429783
build cerbero cross win64

00:09:01

passed #429780
build cerbero fedora x86_64

00:08:25

manual #429785
gst-ios-12.2 allowed to fail manual
build cerbero ios universal
passed #429784
gst-macos-10.14
build cerbero macos x86_64

00:06:59

passed #429776
build fedora x86_64

00:08:27

passed #429777
build nodebug fedora x86_64

00:07:04

passed #429778
build static fedora x86_64

00:15:10

passed #429779
build static nodebug fedora x86_64

00:12:45

 
  Test
passed #429803
check fedora

00:05:40

passed #429787
integration testsuites fedora

00:15:23

passed #429791
valgrind bad

00:10:34

passed #429788
valgrind base

00:11:05

passed #429792
valgrind ges

00:08:16

passed #429789
valgrind good

00:17:44

passed #429790
valgrind ugly

00:02:04

failed #429786
check fedora

00:05:10

 
  Integrate
passed #429793
android universal examples

00:06:22

passed #429794
documentation

00:04:08