scripts: fix indentation for ec2-gc script

Signed-off-by: William Dauchy <william@gandi.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
scripts: fixing spaces for ec2-gc script

Signed-off-by: William Dauchy <william@gandi.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
scripts: unify strings in ec2-gc

Signed-off-by: William Dauchy <william@gandi.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
scripts: reorder imports and main for ec2-gc

Signed-off-by: William Dauchy <william@gandi.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
scripts: replace old-style class for ec2-gc

Signed-off-by: William Dauchy <william@gandi.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
scripts: move global variable used in main only

Signed-off-by: William Dauchy <william@gandi.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>