[rpm] stop/start statefs during un/installation

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
[connman] Compatibility with contextkit

NetworkType and NetworkState should be backward compatible with
contextkit properties to avoi changes in ported code

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
[rpm] pretrans->pre, maybe no shell there

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>