Add without-openssl without-zlib test target.

.github/setup_ci.sh

@@ -13,7 +13,7 @@ lsb_release -a
 
 for TARGET in $TARGETS; do
     case $TARGET in
-    "")
+    ""|--without-openssl|--without-zlib)
         # nothing to do
         ;;
     "--with-kerberos5")

.github/workflows/c-cpp.yml

@@ -21,6 +21,7 @@ jobs:
         - "--with-security-key-builtin"
         - "--with-selinux"
         - "--with-kerberos5 --with-libedit --with-pam --with-security-key-builtin --with-selinux"
+        - "--without-openssl --without-zlib"
 
     steps:
     - uses: actions/checkout@v2