aws - quotas - fix request-increase

[StevenGunn]

Currently, we can request limit increases for service quotas:

resource: service-quota
filters:
  - UsageMetric: present
  - type: usage-metric
actions:
  - type: request-increase
    multiplier: 1.4

However, we encountered the following error when a quota's current limit times its desired multiplier value gives the same as its current limit when rounded down:

IllegalArgumentException: An error occurred (IllegalArgumentException) when calling the RequestServiceQuotaIncrease operation: You must provide a quota value greater than the current quota value

For example, if the current limit is 1, and the usage is 100%, then 1 times 1.4 rounded down still equals 1 (instead of desired next integer 2).

This fixes the logic by instead rounding up the requested limit increase to the nearest integer.

[kentnsw]

That makes totally sense to me. Thanks @StevenGunn
Let's wait a bit longer before merging to see if anyone got any concerns.

[kapilt]

lgtm, thanks