KNOX-2771 - Log HTTP client config parameters such as socket timeouts with info level

[MrtnBalazs]

What changes were proposed in this pull request?

Changed log level of http connection timeout and socket timeout to from DEBUG to INFO and added INFO level log for retry count and retry non safe request parameters, because sometimes clients were confused why the timeout parameters haven't changed even though they changed it in gateway-site.xml, but service.xml override-s it. Now they can see in the log what is the value of these parameters, only after the first request after topology deployment.

How was this patch tested?

I tested it manually, using curl -k -u tom:tom-password https://localhost:8443/gateway/sandbox/hive command from terminal.

1. Nothing is set:

2. Timeout params set in gateway-site.xml and retry params set in sandbox.xml:

3. Timeout params set in gateway-site.xml and in service.xml, retry params set like 2.:

We can see that service.xml overrides gateway-site.xml settings.

The logs only appear after the first request after the topology is deployed.
After that it is not logged until the topology is deployed again.

[MrtnBalazs]

@smolnar82 @zeroflag

[smolnar82]

LGTM, only small changes are required.

[smolnar82]

One more general ask: instead of using screenshots of text blocks (configuration, logs, etc...) in the description or comments, please use the 'text block' representation of GitHub PRs. The way it's impossible to copy-paste that content if I wanted to use it. For instance, instead of using this screenshot

Please do this:

    <property>
        <name>gateway.httpclient.connectionTimeout</name>
        <value>8m</value>
    </property>
    <property>
        <name>gateway.httpclient.socketTimeout</name>
        <value>10m</value>
    </property>

[smolnar82]

LGTM