CHANGES: Add OpenMetrics changes to Statistics

mod_s2s: Bail if connection is destroyed after attempting to open stream Fixes "attempt to compare number with nil" because `session.version` has been cleared by s2smanager.destroy_session. This can happen with the server_epoll setting opportunistic_writes enabled, which means that it can notice that the connection failed at this point, after which it triggers the whole chain of events that leads to session destruction and "cleaning" most of the session fields.

mod_c2s,mod_s2s: Collect stats on TLS versions and ciphers

mod_admin_shell: module:info: List 'items' that can be formatted easily Some items like HTTP providers would be very verbose, others are tricky to handle.

mod_admin_shell: module:info: Show friendlier name for known 'items'

mod_admin_shell: module:info: List provided 'items'

mod_admin_shell: module:info: Use existing host string representation Hosts have a metatable __tostring method that produces a nice representation such as `VirtualHost "example.com"`, which even includes the component module for internal components.

mod_admin_shell: module:info: List dependencies

mod_admin_shell: module:info: Show module status

mod_admin_shell: Add basic command that shows more info about loaded modules To show info about loaded modules. Inspired by the desire to know whether a module was loaded from the core set or 3rd party.