Handle case when function is not a module

**What**
- Add check and skip when the funciton folder is not a module
Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>

Author: LucasRoesler

template/golang-http/modules-cleanup.sh

@@ -28,6 +28,11 @@ cleanup_gomod() {
         return;
     fi
 
+    if [ ! -f ./function/go.mod ]; then
+        echo "module not initialized, skipping go.mod cleanup"
+        return;
+    fi
+
     echo "cleaning up go.mod"
 
     # Copy the user's go.mod

template/golang-middleware/modules-cleanup.sh

@@ -28,6 +28,11 @@ cleanup_gomod() {
         return;
     fi
 
+    if [ ! -f ./function/go.mod ]; then
+        echo "module not initialized, skipping go.mod cleanup"
+        return;
+    fi
+
     echo "cleaning up go.mod"
 
     # Copy the user's go.mod
@@ -98,6 +103,11 @@ cleanup_vendor_modulestxt() {
         return;
     fi
 
+    if [ -f ./function/go.mod ]; then
+        echo "module not initialized, skipping go.mod cleanup"
+        return;
+    fi
+
     echo "cleanup vendor/modules.txt"
 
     # just in case