Add test scripts.

Makefile

diff --git a/Makefile b/Makefile
index e240d1f..c989c2d 100644
--- a/Makefile
+++ b/Makefile
@@ -6,3 +6,5 @@
 
 checkfmt:
 	(cd adapter; ../tools/checkfmt.sh)
+
+presubmit: checkfmt test

tools/ci/linux/istioApigeeAdapter_continuous.cfg

diff --git a/tools/ci/linux/istioApigeeAdapter_continuous.cfg b/tools/ci/linux/istioApigeeAdapter_continuous.cfg
new file mode 100644
index 0000000..c978d5c
--- /dev/null
+++ b/tools/ci/linux/istioApigeeAdapter_continuous.cfg
@@ -0,0 +1,2 @@
+build_file: "istioApigeeAdapter/tools/ci/linux/presubmit.sh"
+

tools/ci/linux/istioApigeeAdapter_presubmit.cfg

diff --git a/tools/ci/linux/istioApigeeAdapter_presubmit.cfg b/tools/ci/linux/istioApigeeAdapter_presubmit.cfg
new file mode 100644
index 0000000..c978d5c
--- /dev/null
+++ b/tools/ci/linux/istioApigeeAdapter_presubmit.cfg
@@ -0,0 +1,2 @@
+build_file: "istioApigeeAdapter/tools/ci/linux/presubmit.sh"
+

tools/ci/linux/presubmit.sh

diff --git a/tools/ci/linux/presubmit.sh b/tools/ci/linux/presubmit.sh
new file mode 100755
index 0000000..c0d4f6e
--- /dev/null
+++ b/tools/ci/linux/presubmit.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+BUILDROOT=${BUILDROOT:-github/istioApigeeAdapter}
+export BUILDROOT
+
+(cd ${BUILDROOT}; make presubmit)
+exit $?