No retries for tags
Temporarily filtered out eu-central* regions until v4 signature support is in place

Conflicts:
	src/main/java/org/dasein/cloud/aws/RegionsAndZones.java
Removed redundant deprecated methods

Conflicts:
	src/main/java/org/dasein/cloud/aws/network/ElasticLoadBalancer.java
Added new IP address capability
Merge pull request #192 from maksimov/develop

No retry and async for tags. Filtered out Frankfurt.