Refactor and Improve SDNC UTs

This change refactor the lib/sdnc script and add some unit tests to
the SDNC component.

Change-Id: Ia389c0e8e78de2eef1b41075a0701b013f9bc925
Signed-off-by: Victor Morales <victor.morales@intel.com>
Issue-Id: INT-102
diff --git a/bootstrap/vagrant-onap/lib/sdnc b/bootstrap/vagrant-onap/lib/sdnc
index 8bf6ae6..3326321 100755
--- a/bootstrap/vagrant-onap/lib/sdnc
+++ b/bootstrap/vagrant-onap/lib/sdnc
@@ -3,7 +3,6 @@
 set -o xtrace
 
 source /var/onap/functions
-source /var/onap/asserts
 
 src_folder=$git_src_folder/openecomp/sdnc
 sdnc_repos=("core" "adaptors" "northbound" "plugins" "oam")
@@ -25,41 +24,35 @@
     done
 }
 
-# _build_sdnc_images() - Builds SDNC images from source code
-function _build_sdnc_images {
-    local folder=$1
+# build_sdnc_images() - Builds SDNC images from source code
+function build_sdnc_images {
+    local folder=${1:-$src_folder/oam}
 
-    build_docker_image $folder/installation/ubuntu
-    asserts_image openecomp/ubuntu-sdnc-image
-
-    build_docker_image $folder/installation/sdnc
-    asserts_image openecomp/sdnc-image
-
-    build_docker_image $folder/installation/admportal
-    asserts_image openecomp/admportal-sdnc-image
-
-    build_docker_image $folder/installation/dgbuilder
-    asserts_image openecomp/dgbuilder-sdnc-image
+    install_package unzip
+    clone_repo sdnc/oam $src_folder/oam
+    # The OAM code depends on all the SDNC repos which should be downloaded and compiled first
+    if [[ "$compile_repo" == "False" ]]; then
+        compile_src $src_folder/oam/
+    fi
+    for dirc in ubuntu sdnc admportal dgbuilder; do
+        build_docker_image $folder/installation/$dirc
+    done
 }
 
 # get_sdnc_images() - Build or retrieve necessary images
 function get_sdnc_images {
     if [[ "$build_image" == "True" ]]; then
-        # The OAM code depends on all the SDNC repos which should be downloaded and compiled first
-        if [[ "$compile_repo" == "False" ]]; then
-            compile_all_sdnc_repos
-        fi
-        _build_sdnc_images $src_folder/oam
+        build_sdnc_images
     else
         pull_openecomp_image sdnc-image openecomp/sdnc-image:latest
         pull_openecomp_image admportal-sdnc-image openecomp/admportal-sdnc-image:latest
         pull_openecomp_image dgbuilder-sdnc-image openecomp/dgbuilder-sdnc-image:latest
     fi
+    pull_docker_image mysql/mysql-server:5.6
 }
 
 # install_sdnc() -  Download and install SDNC services from source code
 function install_sdnc {
-    install_package unzip
     clone_repo sdnc/oam $src_folder/oam
     pushd $src_folder/oam/installation/src/main/yaml
     install_docker_compose