cellular: Add pseudomodem tests to "network3g_pseudomodem" suite.

BUG=chromium:238576
TEST=Verify that all the tests included in this CL run after every build
in the network3g_pseudomodem suite.

Change-Id: I20b98c7894fe3dc461cc15a4ebaa869c573a902c
Reviewed-on: https://gerrit.chromium.org/gerrit/50748
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Arman Uguray <armansito@chromium.org>
Reviewed-by: Arman Uguray <armansito@chromium.org>
Tested-by: Arman Uguray <armansito@chromium.org>
8 files changed