logging: cli options to filter for modules using -v

old style "-v" still works

filtering examples:
-v=debug,network=error,interface=error      // effectively blacklists network and interface
-v=warning,network=debug,interface=debug    // effectively whitelists network and interface

electrum/x509.py

@@ -345,6 +345,5 @@ def load_certificates(ca_path):
 if __name__ == "__main__":
     import certifi
 
-    util.set_verbosity(True)
     ca_path = certifi.where()
     ca_list, ca_keyID = load_certificates(ca_path)