New test failures due to httpservice credential handling changes

[lesserwhirls]

With the changes made to httpservices in Unidata/netcdf-java/#117 (changes summarized in the PR and documented here), we have new failures in these TDS tests:

thredds.tds.FreshTdsInstallSpec
thredds.server.services.TestAdminDebug
ucar.nc2.util.net.TestSSH
ucar.nc2.util.net.TestTomcatAuth

The issue seems to revolve the way the following two classes work with credentials:

1. tds/it/src/test/java/thredds/TestOnLocalServer.java
2. TestProvider inner class of tds/it/src/test/java/ucar/nc2/util/net/TestSSH.java

None of these seem to indicate actual failures in the functionality of the TDS (for example, I can still access the admin/debug interface through a browser), but rather the way in which we utilize httpservices in some helper methods/classes related to setting up the client side of the tests.

[lesserwhirls]

These are no longer failures and were addressed, but not sure exactly when. Closing unless they show up again.