Add script to clean-up unused AWS EC2 Instances and VPCs

Signed-off-by: shiva kumar <shivaku@nvidia.com>

scripts/awscleanup.sh

@@ -8,6 +8,10 @@ fi
 export vpcid=$1
 
 get_tag_value(){
+    if [[ $# -ne 2 ]]; then
+        echo " vpcid and key required to get tag value"
+        exit 1
+    fi
     local vpc=$1
     local key=$2
     aws ec2 describe-tags --filters "Name=resource-id,Values=$vpcid" "Name=key,Values=$key" \
@@ -19,7 +23,7 @@ delete_vpc_resources() {
         echo " vpcid required for deletion"
         exit 1
     fi
-    export vpcid=$1
+    local vpcid=$1
 
     echo "Start cleanup of resources in  VPC: $vpcid"