FAB-7463 add enable_ci_only_tests to run tests in CI

This patch adds "enable_ci_only_tests" make target to verify 
unit-tests in ci downstream job after download the published 
images and binaries from the upstrem build job. 

Also, it adds "basic-checks" make target to perform basic checks in 
CI build job before trigger unit-tests job. enable_ci_only_tests target 
is applicable only for CI not to use this target in local machine.

Change-Id: I2210ed79ea2a5362d7048886cc65d22d5d27b0e1
Signed-off-by: rameshthoomu <rameshbabu.thoomu@gmail.com>

Makefile

@@ -34,6 +34,10 @@
 #   - clean-all - superset of 'clean' that also removes persistent state
 #   - dist-clean - clean release packages for all target platforms
 #   - unit-test-clean - cleans unit test state (particularly from docker)
+#   - basic-checks - performs basic checks like license, spelling and linter
+#   - enable_ci_only_tests - triggers unit-tests in downstream jobs. Applicable only for CI not to
+#     use in the local machine.
+#   - docker-thirdparty - pulls thirdparty images (kafka,zookeeper,couchdb)
 
 BASE_VERSION = 1.1.0-alpha
 PREV_VERSION = 1.1.0-preview
@@ -112,6 +116,8 @@ all: native docker checks
 
 checks: license spelling linter unit-test behave
 
+basic-checks: license spelling linter
+
 desk-check: license spelling linter verify behave
 
 .PHONY: docker-thirdparty
@@ -177,6 +183,9 @@ unit-test: unit-test-clean peer-docker testenv
 
 unit-tests: unit-test
 
+enable_ci_only_tests: testenv
+	cd unit-test && docker-compose up --abort-on-container-exit --force-recreate && docker-compose down
+
 verify: unit-test-clean peer-docker testenv
 	cd unit-test && JOB_TYPE=VERIFY docker-compose up --abort-on-container-exit --force-recreate && docker-compose down