Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>

Moving check for environment variable outside the loop
Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>

Insert a note about AWS_CLUSTER_NAME in the aws-config doc
Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>

Improving implementation and documentation
Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>

Changing instructions, adding unit test for getTagsForCluster and removing duplicated Lookup
Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>

Commit after update
Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>

Correcting bad formatting in aws-config.md
Signed-off-by: Lukasz Jakimczuk <ljakimczuk@gmail.com>