Fix satellite registration for http or https

If the satellite registration url was specified with https, the curl
command to detect the satellite version would not work as expected since
-L was not passed and you get redirected to https when testing the ping
api.

To additionally handle the case where https is specified, also use curl
directly with -k to download the configuration rpm instead of using rpm
with a url.

Fixes another bug with a missing $ in the reference to the
$satellite_version variable.

Change-Id: I984fdfc415eeeed4ef29cc8d0812e1b67545d6b1

extraconfig/pre_deploy/rhel-registration/scripts/rhel-registration

@@ -98,10 +98,10 @@ fi
 
 function detect_satellite_version {
     ping_api=$REG_SAT_URL/katello/api/ping
-    if curl -k -s -D - -o /dev/null $ping_api | grep "200 OK"; then
+    if curl -L -k -s -D - -o /dev/null $ping_api | grep "200 OK"; then
         echo Satellite 6 detected at $REG_SAT_URL
         satellite_version=6
-    elif curl -k -s -D - -o /dev/null $REG_SAT_URL/rhn/Login.do | grep "200 OK"; then
+    elif curl -L -k -s -D - -o /dev/null $REG_SAT_URL/rhn/Login.do | grep "200 OK"; then
         echo Satellite 5 detected at $REG_SAT_URL
         satellite_version=5
     else
@@ -120,9 +120,10 @@ case "${REG_METHOD:-}" in
         ;;
     satellite)
         detect_satellite_version
-        if [ "satellite_version" = "6" ]; then
+        if [ "$satellite_version" = "6" ]; then
             repos="$repos --enable ${satellite_repo}"
-            rpm -Uvh "$REG_SAT_URL/pub/katello-ca-consumer-latest.noarch.rpm" || true
+            curl -L -k -O "$REG_SAT_URL/pub/katello-ca-consumer-latest.noarch.rpm"
+            rpm -Uvh katello-ca-consumer-latest.noarch.rpm || true
             subscription-manager register $opts
             subscription-manager $repos
             yum install -y katello-agent || true # needed for errata reporting to satellite6