Updated automatic install script for Azure Mobility

* Updates the CLI options for the extracted installer to work properly.
  It looks like the actual binary .tar.gz used with the installer had
  been updated with some new install switches breaking compatibility
  with this script.
* Adds support for RHEL8. This is supported by the Azure Mobility
  service since the appliance will actually produce a installer .tar.gz
  with RHEL8 in the filename.

Author: ckabalan

articles/site-recovery/vmware-azure-mobility-install-configuration-mgr.md

@@ -239,6 +239,13 @@ elif [ -f /etc/redhat-release ]; then
             echo $OS >> /tmp/MobSvc/sccm.log
             cp *RHEL7*.tar.gz /tmp/MobSvc
                 fi
+    elif grep -q 'Red Hat Enterprise Linux release 8.* (Ootpa)' /etc/redhat-release || \
+        grep -q 'CentOS Linux release 8.* (Core)' /etc/redhat-release; then
+        if uname -a | grep -q x86_64; then
+            OS="RHEL8-64"
+            echo $OS >> /tmp/MobSvc/sccm.log
+            cp *RHEL8*.tar.gz /tmp/MobSvc
+                fi
     fi
 elif [ -f /etc/SuSE-release ] && grep -q 'VERSION = 11' /etc/SuSE-release; then
     if grep -q "SUSE Linux Enterprise Server 11" /etc/SuSE-release && grep -q 'PATCHLEVEL = 3' /etc/SuSE-release; then
@@ -273,7 +280,7 @@ fi
 Install()
 {
     echo "Perform Installation." >> /tmp/MobSvc/sccm.log
-    ./install -q -d ${INSTALL_DIR} -r Agent -v VmWare
+    ./install -q -d ${INSTALL_DIR} -r MS -v VmWare -c CSLegacy -a Install
     RET_VAL=$?
     echo "Installation Returncode: $RET_VAL" >> /tmp/MobSvc/sccm.log
     if [ $RET_VAL -eq 0 ]; then
@@ -302,7 +309,7 @@ Configure()
 Upgrade()
 {
     echo "Perform Upgrade." >> /tmp/MobSvc/sccm.log
-    ./install -q -v VmWare
+    ./install -q -v VmWare -r MS -v VmWare -c CSLegacy -a Upgrade
     RET_VAL=$?
     echo "Upgrade Returncode: $RET_VAL" >> /tmp/MobSvc/sccm.log
     if [ $RET_VAL -eq 0 ]; then