Poll for server availability in suite setup #60
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Currently the test suite setup runs server start command and then sleeps for 2 seconds. This sleep time is a bit arbitrary and can cause test instability for servers with longer start up times.
Code change polls server socket to check availability before starting tests.
N.b. The exception handling is a bit ugly as it seems that we are using java version that doesn't support try-with-resources . I'm not super familiar with Java so would be happy to get feedback on any better way of doing this.