Support to upgrade vic appliance from 1.5.7 (#2602)

installer/build/scripts/upgrade/upgrade.sh

@@ -67,6 +67,7 @@ VER_1_5_3="v1.5.3"
 VER_1_5_4="v1.5.4"
 VER_1_5_5="v1.5.5"
 VER_1_5_6="v1.5.6"
+VER_1_5_7="v1.5.7"
 
 function usage {
     echo -e "Usage: $0 [args...]
@@ -91,7 +92,7 @@ function usage {
       [--appliance-username value]:    Username of the old appliance. (Ignored if --manual-disks is specified.)
       [--appliance-password value]:    Password of the old appliance. (Ignored if --manual-disks is specified.)
       [--appliance-target value]:      IP Address of the old appliance. (Ignored if --manual-disks is specified.)
-      [--appliance-version value]:     Version of the old appliance. v1.2.1, v1.3.0, v1.3.1, v1.4.0, v1.4.1, v1.4.2, v1.4.3, v1.4.4, v1.5.0 v1.5.1 v1.5.2 v1.5.3 v1.5.4 v1.5.5 or v1.5.6.
+      [--appliance-version value]:     Version of the old appliance. v1.2.1, v1.3.0, v1.3.1, v1.4.0, v1.4.1, v1.4.2, v1.4.3, v1.4.4, v1.5.0 v1.5.1 v1.5.2 v1.5.3 v1.5.4 v1.5.5 v1.5.6 or v1.5.7.
 
       [--destroy]:                     Destroy the old appliance after upgrade is finished. (Ignored if --manual-disks is specified.)
       [--manual-disks]:                Skip the automated govc disk migration.
@@ -241,7 +242,7 @@ function proceedWithUpgrade {
   checkUpgradeStatus "VIC Appliance" ${appliance_upgrade_status}
   local ver="$1"
 
-  if [ "$ver" == "$VER_1_2_1" ] || [ "$ver" == "$VER_1_3_0" ] || [ "$ver" == "$VER_1_3_1" ] || [ "$ver" == "$VER_1_4_0" ] || [ "$ver" == "$VER_1_4_1" ] || [ "$ver" == "$VER_1_4_2" ] || [ "$ver" == "$VER_1_4_3" ] || [ "$ver" == "$VER_1_4_4" ] || [ "$ver" == "$VER_1_5_0" ] || [ "$ver" == "$VER_1_5_1" ] || [ "$ver" == "$VER_1_5_2" ] || [ "$ver" == "$VER_1_5_3" ] || [ "$ver" == "$VER_1_5_4" ] || [ "$ver" == "$VER_1_5_5" ] || [ "$ver" == "$VER_1_5_6" ]; then
+  if [ "$ver" == "$VER_1_2_1" ] || [ "$ver" == "$VER_1_3_0" ] || [ "$ver" == "$VER_1_3_1" ] || [ "$ver" == "$VER_1_4_0" ] || [ "$ver" == "$VER_1_4_1" ] || [ "$ver" == "$VER_1_4_2" ] || [ "$ver" == "$VER_1_4_3" ] || [ "$ver" == "$VER_1_4_4" ] || [ "$ver" == "$VER_1_5_0" ] || [ "$ver" == "$VER_1_5_1" ] || [ "$ver" == "$VER_1_5_2" ] || [ "$ver" == "$VER_1_5_3" ] || [ "$ver" == "$VER_1_5_4" ] || [ "$ver" == "$VER_1_5_5" ] || [ "$ver" == "$VER_1_5_6" ] || [ "$ver" == "$VER_1_5_7" ]; then
     log ""
     log "Detected old appliance's version as $ver."
 

installer/build/scripts/upgrade/util.sh

@@ -108,7 +108,7 @@ function getApplianceVersion() {
   local VER_1_1_1="v1.1.1"
   local VER_1_2_0="v1.2.0"
   local VER_1_2_1="v1.2.1"
-  local VALID_VER=($VER_1_2_1 "v1.3.0" "v1.3.1" "v1.4.0" "v1.4.1" "v1.4.2" "v1.4.3" "v1.4.4" "v1.5.0" "v1.5.1" "v1.5.2" "v1.5.3" "v1.5.4" "v1.5.5" "v1.5.6")
+  local VALID_VER=($VER_1_2_1 "v1.3.0" "v1.3.1" "v1.4.0" "v1.4.1" "v1.4.2" "v1.4.3" "v1.4.4" "v1.5.0" "v1.5.1" "v1.5.2" "v1.5.3" "v1.5.4" "v1.5.5" "v1.5.6" "v1.5.7")
   local COPIED_DIR="$1"
   local ver=""
   local tag=""