Fix feature gate envvar overriding

Currently using envsubst to perform substitution of value overrides in
the feature gate caused conflicts as gotpl gets templated into those
overrides. This adds in '%%%REPLACE_${var}%%%' and uses sed to perform
the substitution instead to address the issue.

This is to achieve parity with OSH-infra patch in [0].

[0] https://review.opendev.org/#/c/697749/

Depends-On: https://review.opendev.org/#/c/697749

Change-Id: I3ed504c65900e7b84728019f3acdf706a40c0427
Signed-off-by: Tin Lam <tlam@omegaprime.dev>

cinder/values_overrides/netpol.yaml

@@ -8,10 +8,10 @@ network_policy:
             cidr: 172.17.0.1/16
       - to:
         - ipBlock:
-            cidr: $API_ADDR/16
+            cidr: %%%REPLACE_API_ADDR%%%/16
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

glance/values_overrides/netpol.yaml

@@ -42,7 +42,7 @@ network_policy:
             port: 443
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

heat/values_overrides/netpol.yaml

@@ -42,7 +42,7 @@ network_policy:
               application: cinder
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

horizon/values_overrides/netpol.yaml

@@ -47,7 +47,7 @@ network_policy:
               application: heat
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

keystone/values_overrides/netpol.yaml

@@ -66,7 +66,7 @@ network_policy:
     egress:
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

neutron/values_overrides/netpol.yaml

@@ -5,7 +5,7 @@ network_policy:
     egress:
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

nova/values_overrides/netpol.yaml

@@ -5,15 +5,15 @@ network_policy:
     egress:
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%
   placement:
     egress:
       - to:
         - ipBlock:
-            cidr: $API_ADDR/32
+            cidr: %%%REPLACE_API_ADDR%%%/32
         ports:
           - protocol: TCP
-            port: $API_PORT
+            port: %%%REPLACE_API_PORT%%%

tools/deployment/common/get-values-overrides.sh

@@ -54,14 +54,21 @@ function combination () {
   done
 }
 
+function replace_variables() {
+  for key in $(env); do
+    local arr=( $(echo $key | awk -F'=' '{ print $1, $2 }') )
+    sed -i "s#%%%REPLACE_${arr[0]}%%%#${arr[1]}#g" $@
+  done
+}
+
 function override_file_args () {
     OVERRIDE_ARGS=""
     echoerr "We will attempt to use values-override files with the following paths:"
     for FILE in $(combination ${1//,/ } | uniq | tac); do
       FILE_PATH="${HELM_CHART_ROOT_PATH}/${HELM_CHART}/values_overrides/${FILE}.yaml"
       if [ -f "${FILE_PATH}" ]; then
-        envsubst < ${FILE_PATH} > /tmp/${HELM_CHART}-${FILE}.yaml
-        OVERRIDE_ARGS+=" --values=/tmp/${HELM_CHART}-${FILE}.yaml "
+        replace_variables ${FILE_PATH}
+        OVERRIDE_ARGS+=" --values=${FILE_PATH} "
       fi
         echoerr "${FILE_PATH}"
     done