Remove vagrant lock from build.sh and run_test.sh (#190)

vagrant_lock was created in order to prevent parallel execution of two 'Vagrant up' operations in parallel. Previously it was necessary due to Vagrant internal Chef issue. Now several bugs in Vagrant are fixed and MDBCI uses own Chef to provision nodes for builds and tests. There is no need to wait for previous Vagrant run finished, removing all waiting from all scripts.
'rm vagrant_lock is still present to remove locks created by previous versions of build and test scripts-

maxscale-system-test/Documentation/LOCAL_DEPLOYMENT.md

@@ -141,13 +141,6 @@ https://help.ubuntu.com/lts/serverguide/libvirt.html
 https://github.com/vagrant-libvirt/vagrant-libvirt#installation
 
 
-### vagrant is locked, waiting ...
-
-```bash
-rm ~/vagrant_lock
-```
-
-
 ### Random VM creation failures
 
 Plese check the amount of free memory and amount of running VMs

maxscale-system-test/JENKINS.md

@@ -121,7 +121,3 @@ If test run was executed with parameter 'do_not_destroy' set yo 'yes' please do
 [destroy](http://max-tst-01.mariadb.com:8089/view/axilary/job/destroy/) against your 'target'
 
 This job also have to be executed if test run job crashed or it was interrupted.
-
-In case of build or test job crash, interruption, Jenkins crash during Vagrant operation it is possible that Vagrant lock
-stays in locked state and no other job can progress (job can be started, but it is waiting for Vagrant lock -
-'/home/vagrant/vagrant_lock' can be seen in the job log). In this case lock can be removed by [remove_lock](http://max-tst-01.mariadb.com:8089/view/axilary/job/remove_lock/) job.

maxscale-system-test/mdbci/create_config.sh

@@ -32,26 +32,17 @@ ${mdbci_dir}/mdbci --override --template  ${MDBCI_VM_PATH}/${name}.json generate
 mkdir ${MDBCI_VM_PATH}/$name/cnf
 cp -r ${script_dir}/cnf/* ${MDBCI_VM_PATH}/$name/cnf/
 
-
-while [ -f ~/vagrant_lock ]
-do
-	echo "vagrant is locked, waiting ..."
-	sleep 5
-done
-touch ~/vagrant_lock
-echo ${JOB_NAME}-${BUILD_NUMBER} >> ~/vagrant_lock
-
 echo "running vagrant up $provider"
 
 ${mdbci_dir}/mdbci up $name --attempts 3
 if [ $? != 0 ]; then
 	echo "Error creating configuration"
-	rm ~/vagrant_lock
+	rm -f ~/vagrant_lock
 	exit 1
 fi
 
 #cp ~/build-scripts/team_keys .
 ${mdbci_dir}/mdbci public_keys --key ${team_keys} $name
 
-rm ~/vagrant_lock
+rm -f ~/vagrant_lock
 exit 0

maxscale-system-test/mdbci/run_test.sh

@@ -91,7 +91,7 @@ set -x
             if [ "${do_not_destroy_vm}" != "yes" ] ; then
                 ${mdbci_dir}/mdbci destroy $name
             fi
-            rm ~/vagrant_lock
+            rm -f ~/vagrant_lock
             exit 1
         fi
         ${mdbci_dir}/mdbci snapshot take --path-to-nodes $name --snapshot-name clean
@@ -105,7 +105,7 @@ else
   if [ "${do_not_destroy_vm}" != "yes" ] ; then
 	${mdbci_dir}/mdbci destroy $name
   fi
-  rm ~/vagrant_lock
+  rm -f ~/vagrant_lock
   exit 1
 fi