Ldap server availability check

ldap/ntp server connectivity check function has been added.
2 files modified:
deploy_idp.sh (function uncommented)
files/script.bootstrap.functions.sh (validateConnectivity() has been rewritten)
Instead of using $myecho repeatedly below, would it be better to do `${Echo} $1` here? Saves typing and that way the echo command won't be included in the log.