fix(ssh): added missing import

feat(statsd): added extra logging into statsd initalization

fix(service-api): rely on urljoin for constructing the call url

chore(imports): optimize imports for ssh events

fix(api.url): set default api.url and re-use defaults in ssh wrappers

feat(ssh-wrapeprs): moved the setup logging into common function to not relly on v1 codebase

settings: remove links to rccontrol from settings and default to the docker image paths

fix(ssh): Added alternative SshWrapper and changes needed to support it + service api. Fixes: RCCE-6

chore(deps): bumped dogpile.cache==1.3.2

chore(release): bumped version to 5.1.0