Fix its-* tests

There was a syntax error because of '

Change-Id: I78ac08232af5d509349f69342f2e6099255b5078
diff --git a/jenkins/gerrit-bazel-build-its-plugin.sh b/jenkins/gerrit-bazel-build-its-plugin.sh
index dbb9fb7..91b66fd 100644
--- a/jenkins/gerrit-bazel-build-its-plugin.sh
+++ b/jenkins/gerrit-bazel-build-its-plugin.sh
@@ -7,7 +7,7 @@
 git read-tree -u --prefix=plugins/its-base base/{branch}
 
 rm -Rf bazel-genfiles
-'
+
 if [ -f plugins/its-{name}/external_plugin_deps.bzl ]
 then
   cp -f plugins/its-{name}/external_plugin_deps.bzl plugins/