Description of problem:
Monitoring Parent can not be set

Version-Release number of selected component (if applicable):
spacewalk-proxy-installer-1.7.6-4

How reproducible:
100%

Steps to Reproduce:
1. Register EL[56] system to Satellite
2. Add rhn-tools channel
3. Add provisioning entitlement
4. yum install spacewalk-proxy-installer
5. Stop the Satellite server (rhn-satellite stop)  
6. ./configure-proxy.sh --force-own-ca  --monitoring-parent=test


Actual results:
Always the Satellite to which the RHN-Proxy is activated will be used.

Expected results:
The installation script (configure-proxy.sh) code imply other behaviour.

Is seems there is a misspell MONITORING_PARENT_IP -> MONITORING_PARENT and seems even if set RESOLVED_IP will not be influenced:

        --enable-scout=*) ENABLE_SCOUT=$(echo $1 | cut -d= -f2-);;
        --monitoring-parent=*) MONITORING_PARENT_IP=$(echo $1 | cut -d= -f2-);;
        --monitoring-parent-ip=*) MONITORING_PARENT_IP=$(echo $1 | cut -d= -f2-);;
        --populate-config-channel=*) POPULATE_CONFIG_CHANNEL=$(echo $1 | cut -d= -f2-);;
        --start-services=*) START_SERVICES=$(echo $1 | cut -d= -f2-);;
        *) echo Error: Invalid option $1
    esac
    shift
done

default_or_input () {
	local MSG="$1"
	local VARIABLE="$2"
	local DEFAULT="$3"

	local INPUT
	local CURRENT_VALUE=$(eval "echo \$$VARIABLE")
	#in following code is used not so common expansion
	#var_a=${var_b:-word}
	#which is like: var_a = $var_b ? word
	DEFAULT=${CURRENT_VALUE:-$DEFAULT}
	local VARIABLE_ISSET=$(set | grep "^$VARIABLE=")

	echo -n "$MSG [$DEFAULT]: "
	if [ "$INTERACTIVE" = "1" -a  -z "$VARIABLE_ISSET" ]; then
		read INPUT
	elif [ -z "$VARIABLE_ISSET" ]; then
		echo $DEFAULT
	else
		eval "DEFAULT=\$$VARIABLE"
		echo $DEFAULT
	fi
	if [ -z "$INPUT" ]; then
		INPUT="$DEFAULT"
	fi
	eval "$VARIABLE='$INPUT'"
}




    default_or_input "Monitoring parent" MONITORING_PARENT "$RHN_PARENT"
    #RESOLVED_IP=$(/usr/bin/getent hosts $RHN_PARENT | cut -f1 -d' ')
    # FIX dyordano ? 
    RESOLVED_IP=$(/usr/bin/getent hosts ${MONITORING_PARENT:-$RHN_PARENT} | cut -f1 -d' ')
    default_or_input "Monitoring parent IP" MONITORING_PARENT_IP "$RESOLVED_IP"



Additional info: