Comment 21 for bug 1782285

Verified that libGLESv1_CM.so gets installed after installing libglvnd0 from bionic-proposed.

To upgrade libglvnd0, I did following:
1) Add "deb http://ports.ubuntu.com/ubuntu-ports bionic-proposed restricted main multiverse universe" in /etc/apt/sources.list
2) sudo apt-get update
3) sudo apt-get install --only-upgrade libglvnd0

After doing above verified that libGLESv1_CM.so get installed:
$ ls -lh /usr/lib/aarch64-linux-gnu/libGLESv1*
lrwxrwxrwx 1 root root 21 Aug 15 06:20 /usr/lib/aarch64-linux-gnu/libGLESv1_CM.so -> libGLESv1_CM.so.1.0.0
lrwxrwxrwx 1 root root 21 Aug 15 06:20 /usr/lib/aarch64-linux-gnu/libGLESv1_CM.so.1 -> libGLESv1_CM.so.1.0.0
-rw-r--r-- 1 root root 139K Aug 15 06:20 /usr/lib/aarch64-linux-gnu/libGLESv1_CM.so.1.0.0

libglvnd version that was verified to have libGLESv1_CM.so:
$ apt-cache policy libglvnd0
libglvnd0:
  Installed: 1.0.0-2ubuntu2.2
  Candidate: 1.0.0-2ubuntu2.2
  Version table:
 *** 1.0.0-2ubuntu2.2 500
        500 http://ports.ubuntu.com/ubuntu-ports bionic-proposed/main arm64 Packages
        100 /var/lib/dpkg/status
     1.0.0-2ubuntu2.1 500
        500 http://ports.ubuntu.com/ubuntu-ports bionic-updates/main arm64 Packages
     1.0.0-2ubuntu2 500
        500 http://ports.ubuntu.com/ubuntu-ports bionic/main arm64 Packages