Add ability to specify source credentials if required

PROD-31387

Change-Id: I6425a37a3f179e13c5e6cb4184855169a0df63cf
diff --git a/vnf_onboarding/vnf/avi_loadbalancer/mirrors.yml b/vnf_onboarding/vnf/avi_loadbalancer/mirrors.yml
index c74bda3..0b47570 100644
--- a/vnf_onboarding/vnf/avi_loadbalancer/mirrors.yml
+++ b/vnf_onboarding/vnf/avi_loadbalancer/mirrors.yml
@@ -7,4 +7,5 @@
       - name: avi-loadbalancer
         downstream: vnf-onboarding/avi-loadbalancer
         upstream: ${_param:gerrit_vnf_onboaring_avi_repo}
-        branches: master
\ No newline at end of file
+        branches: master
+        source_credentials: "${_param:vnf_onboaring_source_credentials}"
\ No newline at end of file
diff --git a/vnf_onboarding/vnf/metaswitch_vsbc/mirrors.yml b/vnf_onboarding/vnf/metaswitch_vsbc/mirrors.yml
index 0a0c300..f032fb4 100644
--- a/vnf_onboarding/vnf/metaswitch_vsbc/mirrors.yml
+++ b/vnf_onboarding/vnf/metaswitch_vsbc/mirrors.yml
@@ -9,7 +9,9 @@
         downstream: vnf-onboarding/metaswitch-vsbc
         upstream: ${_param:gerrit_vnf_onboaring_metaswitch_repo}
         branches: master
+        source_credentials: "${_param:vnf_onboaring_source_credentials}"
       - name: platform-tests
         downstream: vnf-onboarding/platform-tests
         upstream: ${_param:gerrit_vnf_onboaring_platform_tests_repo}
-        branches: master
\ No newline at end of file
+        branches: master
+        source_credentials: "${_param:vnf_onboaring_source_credentials}"
\ No newline at end of file
diff --git a/vnf_onboarding/vnf/mock_nginx/mirrors.yml b/vnf_onboarding/vnf/mock_nginx/mirrors.yml
index 6aff50c..76ca94c 100644
--- a/vnf_onboarding/vnf/mock_nginx/mirrors.yml
+++ b/vnf_onboarding/vnf/mock_nginx/mirrors.yml
@@ -7,4 +7,5 @@
       - name: nginx-vnf
         downstream: vnf-onboarding/nginx-vnf
         upstream: ${_param:gerrit_vnf_onboaring_nginx_repo}
-        branches: master
\ No newline at end of file
+        branches: master
+        source_credentials: "${_param:vnf_onboaring_source_credentials}"
\ No newline at end of file