Merge pull request #139 from sagarl/nflx-109

Adding AWSCredential Changes related to IAMCredentials
old-school version updating (only necessary for this older branch0
Merge pull request #145 from jasobrown/nflx-109

old-school version updating
making the switch to using AWSCredntialsProvider when instantiating aws clients.
Looks like this was missed in the backport :)
Merge pull request #146 from jasobrown/nflx-109

making the switch to using AWSCredntialsProvider when instantiating aws clients
Reading new host address & new host ip from config