import certificate for test

[individual-it]

1. root
   to import a certificate into the AVD we first need to have root.
   1. start the emulator
   2. use https://gitlab.com/newbit/rootAVD to gain root or use a pre-rooted AVD
   3. accept the SU privileges forever
   4. rootAVD will stop the emulator, so start it again
2. import the certificate
   there are different ways to install the certificate so it's easy to use this script: https://github.com/sysraccoon/adb-install-cert/
   1. pipx install adb-install-cert
   2. opencloudApp/src/integrationTest/install-cert.sh (alternatively, set the OPENCLOUD_PAT env. variable)