Add Omnissa Horizon Client playbook to role

Rocky clients require the Omnissa Horizon Client installed to facilitate access to CVTE. There are various steps to create a properly functioning, and intuitive, Horizon Client installation. These are being added to the clients common role to ensure uniformity in provisioning of Rocky clients on the CSTN.

• Add GPG key

• Installed RPM (Currently mirrored to vta-fs. should be moved to a Foreman repo)

• Patch the Horizon Client script (Fails to use bundled GCC libs, due to STIG preventing ldd invocation by unprivileged users)

• Create a symbolic link in the Horizon Client PKCS11 folder to the Rocky PKCS11 library

• Install default config (To ensure students don't mess up connecting)