1. OSH jobs now require gate_scripts_relative_path
variable to be explicitly defined.
2. Strict-mode test cases require a test package
that does not have to install dependencies, or
the test case will fail (since strict mode will
uninstall the dependency package and thus the
originally requested package).
3. Reduce redundant logging of the entire pod log
every time the pod status is checked; this was
causing long test cases (e.g. apt strict mode) to
fail.
4. Add a helper function to dump the pod log for
debugging failed test cases, since we will no
longer have the redundant logs above.
Change-Id: I7d2f6d2d161689a8744275b3d07571c83862a89c
c39963341f