Add parameter for extra repos definition

BOOTSTRAP_EXTRA_REPO_PARAMS - adds ability to
define extra repositories on bootstrap stage.

Change-Id: I218d1b7f1402f8d147aee6b5758f5a5d76687616
diff --git a/jenkins/client/job/deploy/lab/deploy.yml b/jenkins/client/job/deploy/lab/deploy.yml
index 751089a..b6bbc71 100644
--- a/jenkins/client/job/deploy/lab/deploy.yml
+++ b/jenkins/client/job/deploy/lab/deploy.yml
@@ -90,6 +90,10 @@
                 type: text
                 default: ""
                 description: "YAML with overrides for Salt deployment"
+              BOOTSTRAP_EXTRA_REPO_PARAMS:
+                type: string
+                default: ""
+                description: "Defines a list of extra repos with parameters, format: repo 1, repo priority 1, repo pin 1; repo 2, repo priority 2, repo pin 2"
               FORMULA_PKG_REVISION:
                 type: string
                 default: ""