AEM socket listener received bytes comparison is not correct

[henrykuijpers]

https://github.com/ggotti/aem-base/blob/master/aemInstaller.py#L51

We have noticed that the byte array sometimes contains only "s" and then the next byte array contains "tarted". Therefore, this check does not work correctly. The solution is to concatenate all responses and then compare the end result with "started".