Increase timeout in Expect-Cassandra tests
Tweak ES pom to sign test jars during releases
Tweak titan-hadoop-core artifact deployment

The shared-resources and example-data artifacts are now detached from
the build, so they're no longer installed, signed, or deployed by
default.  I added explicit maven-install-plugin executions to install
them locally to support the titan-hadoop-1 and -2 modules.  The point
of this is to avoid deploying these artifacts to Maven Central.

This commit also redeclares the gpg plugin at the bottom of the
titan-hadoop-core pom so that the test jars will get signed.  Seems
like the maven-jar-plugin's test-jar execution is ordered after
maven-gpg-plugin's sign execution.
Detach Hadoop job jars from titan-hadoop builds
Second attempt at titan-hadoop-core pom tweaks

Retrying 0b602d8f5b21c54fdb1f7587ad710e50721f21bf, hopefully without
build errors this time
Giving up on titan-hadoop-core deploy tweaks

There is no way to exclude specific classifiers from the deploy stage
short of detaching the from the build.  Even disabling the
default-deploy execution and manually configuring deploy-file
executions for only a whitelist of classifiers is a deadend strategy,
because deploy-file requires an explicit repositoryId instead of just
defaulting to whatever repository is configured in the pom.  I forgot
how much of a headache this is, but the only way to get this behavior
is more modules.  Not going down that path right now...