Task 90, updated code

Second pull request for fixing the issue https://github.com/yegor256/s3auth/issues/90 .

**Notes:**

1) Please not that in order to build the project, I need to use the 1.0-SNAPSHOT version of the jcabi-ssl-maven-plugin until the issue https://github.com/jcabi/jcabi-ssl-maven-plugin/issues/4 is fixed. I created a pull request with changes that will fix it.

2) I'm getting lots of code quality errors like shown below, which I'm fixing now.

```
[ERROR] \src\main\java\com\s3auth\hosts\DefaultDynamo.java[30]: Lines in file sh
ould end with Unix-like end of line (RegexpMultilineCheck)
[ERROR] \src\main\java\com\s3auth\hosts\DefaultDynamo.java[55]: Lines in file sh
ould end with Unix-like end of line (RegexpMultilineCheck)
[ERROR] \src\main\java\com\s3auth\hosts\DefaultDynamo.java[71]: Lines in file sh
ould end with Unix-like end of line (RegexpMultilineCheck)
```

3) The tests seem to run.