Docker: enable ssh tests

Test: restore tty after restconf start

test/README.md

@@ -36,6 +36,13 @@ To download the openconfig and yang models required for the tests:
    git pull origin main
 ```
 
+## SSH and SSHD
+
+Some tests require ssh and even sshd (eg test_netconf_ssh_callhome.sh), and requires generated host-keys:
+```
+  # ssh-keygen -a
+```
+
 ## Continuous Integration
 
 CI is done via github actions.

test/lib.sh

@@ -637,6 +637,7 @@ function wait_restconf(){
     fi
 #    echo "curl $CURLOPTS -X GET $myproto://localhost/restconf"
     hdr=$(curl $CURLOPTS -X GET $myproto://localhost/restconf 2> /dev/null)
+    stty $STTYSETTINGS >/dev/null
 #    echo "hdr:\"$hdr\""
     let i=0;
     while [[ "$hdr" != *"200"* ]]; do

test/test_netconf_ssh_callhome.sh

@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 # Netconf callhome RFC 8071
+# Requires an openssh + opensshd install + ssh-keygen -A
 
 # Magic line must be first in script (see README.md)
 s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
@@ -13,6 +14,13 @@ if ! [ -x "$ssh_bin" ]; then
     if [ "$s" = $0 ]; then exit 0; else return 0; fi # skip
 fi
 
+if ! [ -x "/usr/sbin/sshd" ]; then
+    echo "...sshd not installed"
+    rm -rf $dir
+    if [ "$s" = $0 ]; then exit 0; else return 0; fi # skip
+fi
+
+
 # Dont run this test with valgrind
 if [ $valgrindtest -ne 0 ]; then
     echo "...skipped "