added flag to let users manually specify a maximum spot instance price, as opposed to letting us automatically pick one
Merge branch 'spot-instances-flag' into specify-spot-price-flag
passing along max spot price to appcontroller, so that it can send it to the iaas manager
Merge branch 'spot-instances-flag' into specify-spot-price-flag
added unit test for manually specifying spot price, and fixed code that used the automatically generated spot price
str'ing max_spot_price so that it doesn't end up as None if not set
merged with org/testing
Merge pull request #181 from shatterednirvana/specify-spot-price-flag

Allow users to specify the maximum bid price for spot instances