Add missing workspace declaration to presubmit jobs

Change-Id: I8aff6a0b116ee67b372b887d3c6c53f6b95567a3

jenkins/build_defs/bazel-job-Gerrit.xml.tpl

diff --git a/jenkins/build_defs/bazel-job-Gerrit.xml.tpl b/jenkins/build_defs/bazel-job-Gerrit.xml.tpl
index 45e2ede..48a24be 100644
--- a/jenkins/build_defs/bazel-job-Gerrit.xml.tpl
+++ b/jenkins/build_defs/bazel-job-Gerrit.xml.tpl
@@ -51,6 +51,7 @@
         refspec: params.REFSPEC,
         bazel_version: "latest",
         configuration: '''{{ raw_imports['JSON_CONFIGURATION'].replace('\\', '\\\\').replace("'", "\\'") }}''',
+        workspace: "{{ variables.WORKSPACE }}",
         mail_recipient: "",
         {% if variables.SAUCE_ENABLED == "true" %}
         sauce: "61b4846b-279d-4369-ae20-31e9d8b9bc66",

jenkins/build_defs/bazel-job-PR.xml.tpl

diff --git a/jenkins/build_defs/bazel-job-PR.xml.tpl b/jenkins/build_defs/bazel-job-PR.xml.tpl
index ec78dbd..997209e 100644
--- a/jenkins/build_defs/bazel-job-PR.xml.tpl
+++ b/jenkins/build_defs/bazel-job-PR.xml.tpl
@@ -57,6 +57,7 @@
         refspec: "+refs/pull/*:refs/remotes/origin/pr/*",
         bazel_version: "latest",
         configuration: '''{{ raw_imports['JSON_CONFIGURATION'].replace('\\', '\\\\').replace("'", "\\'") }}''',
+        workspace: "{{ variables.WORKSPACE }}",
         mail_recipient: "",
         {% if variables.SAUCE_ENABLED == "true" %}
         sauce: "61b4846b-279d-4369-ae20-31e9d8b9bc66",