This commit modifies the travis build script, and our local test script
to ensure that the race condition builds are conducted in a parallel
build. After this commit two travis builds will be kicked off for each
push/commit: one that runs the race condition tests in isolation, and
another that runs the integration tests then the coverage tests.
In order to do the above cleanly, the integration tests are now guarded
behind a build flag. In order to run the integration tests, one now
needs to specify the `-tags rpctest` flag when running the `go test`
command.
This commit increases the history size of the race condition detector
such that we will more reliably be able to recover the stack in the
case that a race condition occurs.
Add check that vendor directory is installed and if not we should run
glide install, also if additional flag '-i' is specified than we will
reinstall dependencies.
