tests: configure 32 mb physmem

Absolutely nothing good happens when we force the kernel to briefly
map and then unmap 16gb as vpp starts. Effect exacerbated when
TEST_JOBS = 20...40, and so forth.

Type: test

Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: Id8e3ce1763cad3a0891d5d6c8d2c1e3e610682d7

test/framework.py

@@ -381,6 +381,7 @@ class VppTestCase(unittest.TestCase):
                            "prefix", cls.shm_prefix, "}", "cpu", "{",
                            "main-core", str(cpu_core_number),
                            cls.worker_config, "}",
+                           "physmem", "{", "max-size", "32m", "}",
                            "statseg", "{", "socket-name", cls.stats_sock, "}",
                            "socksvr", "{", "socket-name", cls.api_sock, "}",
                            "plugins",