Timeout build after 1 hour to prevent it hanging forever. (#1564)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

Jenkinsfile

@@ -49,6 +49,7 @@ if (env.BRANCH_NAME != "master") {
 }
 
 try {
+    timeout(time: 1, unit: 'HOURS') {
         parallel UnitTests: {
             def stage_name = "Unit tests node: "
             node {
@@ -167,7 +168,7 @@ try {
                         try {
                             sh 'pip install -r docs/requirements.txt'
                             sh 'mkdocs build -s'
-                    } catch(e) {
+                        } catch (e) {
                             throw e
                         }
                     }
@@ -202,13 +203,13 @@ try {
                             shortCommit = sh(returnStdout: true, script: "git log -n 1 --pretty=format:'%h'").trim()
                             version = sh(returnStdout: true, script: "grep -oE \"version=(.*)\" ${version_property_file} | cut -d= -f2").trim()
                             sh "docker image inspect \
---format='{{index .Config.Labels \"org.label-schema.vcs-ref\"}}' \
-${image} \
-| grep ${shortCommit}"
+    --format='{{index .Config.Labels \"org.label-schema.vcs-ref\"}}' \
+    ${image} \
+    | grep ${shortCommit}"
                             sh "docker image inspect \
---format='{{index .Config.Labels \"org.label-schema.version\"}}' \
-${image} \
-| grep ${version}"
+    --format='{{index .Config.Labels \"org.label-schema.version\"}}' \
+    ${image} \
+    | grep ${version}"
                         }
                         try {
                             stage(stage_name + 'Test image') {
@@ -259,6 +260,7 @@ ${image} \
                 }
             }
         }
+    }
 } catch (e) {
     currentBuild.result = 'FAILURE'
 } finally {