.gitignore: add more subproject checkouts

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Status Job ID Name Coverage
  Build Docker
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alpine amd64 manifest builder docker

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android docker

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cerbero fedora amd64 docker

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fedora amd64 docker

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gst-indent amd64 docker

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  Preparation
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gst indent

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manual
manifest

 
  Build
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build clang fedora x86_64

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docker windows 1809 allowed to fail manual
build msys2

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build nodebug fedora x86_64

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build static fedora x86_64

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build static nodebug fedora x86_64

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docker windows 1809
build vs2017 amd64

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docker windows 1809
build vs2017 x86

 
  Test
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gstreamer
check fedora

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gstreamer
integration testsuites fedora 1/4

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gstreamer
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gstreamer
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gstreamer
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  Integrate
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documentation

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gstreamer-full

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gstreamer-full-minimal