updating alpine and other tools

[patlachance]

• alpine 3.8 -> 3.11
• duo 1.10.5 -> 1.11.3
• google-authenticator-libpam 1.05 -> 1.08
• openssh V_7_8_P1 -> V_8_2_P1
• sudosh 0.1.3 -> 0.2.0

fixed also some issues preventing successfull startup / login

• no need to lock down /proc on OpenShift
• permission issue with github-authorized-keys

added restart script