Improve auto test for policy agent

Auto test for policy agent remote/local image
Return basic health check in the printout
Add test description files.

Issue-ID: NONRTRIC-79
Signed-off-by: YongchaoWu <yongchao.wu@est.tech>
Change-Id: I1dbdfbcc2568a1b46dae5d42ebcb8329c818f3ac
diff --git a/near-rt-ric-simulator/common/test_env.sh b/near-rt-ric-simulator/common/test_env.sh
index 363f879..b307a69 100755
--- a/near-rt-ric-simulator/common/test_env.sh
+++ b/near-rt-ric-simulator/common/test_env.sh
@@ -1,15 +1,18 @@
 #!/usr/bin/env bash
 
+# Set the images for the Policy agent app to use for the auto tests. Do not add the image tag.
+#
 # Local image and tag, shall point to locally built image (non-nexus path)
 export POLICY_AGENT_LOCAL_IMAGE=o-ran-sc/nonrtric-policy-agent
-
+# Remote image
+export POLICY_AGENT_REMOTE_IMAGE=nexus3.o-ran-sc.org:10004/o-ran-sc/nonrtric-policy-agent
 
 # Common env var for auto-test.
 
 POLICY_AGENT_PORT=8081
 POLICY_AGENT_LOGPATH="/var/log/policy-agent/application.log"  #Path the application log in the policy agent container
-DOCKER_SIM_NWNAME="nonrtric-docker-net"             #Name of docker private network
-CONSUL_HOST="consul-server"            #Host name of consul
-CONSUL_PORT=8500                       #Port number of consul
-CONFIG_BINDING_SERVICE="config-binding-service"  #Host name of CBS
-PA_APP_BASE="policy-agent"
+DOCKER_SIM_NWNAME="nonrtric-docker-net"                       #Name of docker private network
+CONSUL_HOST="consul-server"                                   #Host name of consul
+CONSUL_PORT=8500                                              #Port number of consul
+CONFIG_BINDING_SERVICE="config-binding-service"               #Host name of CBS
+PA_APP_BASE="policy-agent"                                    #Base name for policy agent container