Modify tests so they all work with evhtp and backend config, eg that CLICON_RESTCONF_CONFIG is default true.

Note that some tests are forced to CLICON_RESTCONF_CONFIG is false due to test complexities.

test/restconfig.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Create restconf backend config with a single socket
+# ipv4 no-ssl
+# The script defines a VARIABLE containing XML config
+# This is either inserted into the startup db, or installed in the backend using the
+# restconfigrun() function.
+# The config relies on clixon-restconf.yang being loaded.
+
+RESTCONFIG=$(cat <<EOF
+<restconf xmlns="https://clicon.org/restconf">
+   <ssl-enable>false</ssl-enable>
+   <auth-type>password</auth-type>
+   <socket><namespace>default</namespace><address>0.0.0.0</address><port>80</port><ssl>false</ssl></socket>
+</restconf>
+EOF
+)
+
+# Install the config above on a backend
+restconfigrun()
+{
+    new "netconf edit config"
+    expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><edit-config><target><candidate/></target><config>$RESTCONFIG</config></edit-config></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><ok/></rpc-reply>]]>]]>$"
+
+    new "netconf commit"
+    expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><commit/></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><ok/></rpc-reply>]]>]]>$"
+}