* RESTCONF configuration is unified and moved from clixon-config.yang to clixon-restconf.yang

* Except `CLICON_RESTCONF_DIR` which remains in clixon-config.yang due to bootstrapping
    * -d <dir> option removed
  * This applies to both evhtp and fcgi RESTCONF
    * Both can also read config from backend, and be started from backend
  * You may need to move config as follows (from clixon-config.yang to clixon-restconf.yang)
    * CLICON_RESTCONF_PRETTY -> restconf/pretty
    * CLICON_RESTCONF_PATH -> restconf/fcgi-path

test/test_restconf_startup.sh

@@ -35,7 +35,7 @@ EOF
 # Use yang in example
 
 # Define default restconfig config: RESTCONFIG
-restconf_config none
+restconf_config none true
 
 cat <<EOF > $cfg
 <clixon-config xmlns="http://clicon.org/config">