[SSH-7408]: Implemented '!' test type.

include/tests_ssh

@@ -160,6 +160,16 @@
                     else
                         RESULT="UNKNOWN"
                     fi
+
+                elif [ "${TESTTYPE}" = "!" ]; then
+                    if [ "${FOUNDVALUE}" = "${WEAKVALUE}" ]; then
+                        RESULT="WEAK"
+                    elif [ ! "${FOUNDVALUE}" = "${WEAKVALUE}" ]; then
+                        RESULT="GOOD"
+                    else
+                        RESULT="UNKNOWN"
+                    fi
+
                 else
                     RESULT="NONE"
                 fi