Add timestamps to logs

Signed-off-by: Si Beaumont <simon.beaumont@citrix.com>
Format logging better

Signed-off-by: Si Beaumont <simon.beaumont@citrix.com>
Return Lwt type in plugin interface
Add Jira plugin

Signed-off-by: Si Beaumont <simon.beaumont@citrix.com>
Load only configured plugins

Signed-off-by: Si Beaumont <simon.beaumont@citrix.com>
Remove dead function in Logger plugin

Signed-off-by: Si Beaumont <simon.beaumont@citrix.com>