CI: Add tmpfs to all jenkinsfiles

Change-Id: Ida29d70d48d5f39aabf0b25c66b51f79324a8cba

tests/CI/periodics-daily.jenkinsfile

@@ -42,7 +42,7 @@ pipeline {
 					def ri = images[(int)r]
 					def randomImage = env.DOCKER_REGISTRY + "/" + ri
 					def dockerOptions = "--privileged --ulimit core=0 --ulimit nofile=10240 " +
-						" -v /srv/jenkins:/srv/jenkins:rw -v /srv/cache:/srv/cache:rw " +
+						" --mount type=tmpfs,tmpfs-size=1g,dst=/tmp -v /srv/jenkins:/srv/jenkins:rw -v /srv/cache:/srv/cache:rw " +
 						" --entrypoint=''"
 					def bt = env.BUILD_TAG.replaceAll(/[^a-zA-Z0-9_.-]/, '-')
 					def outputdir = "tests/CI/output/Testsuite"

tests/CI/ref_debug.jenkinsfile

@@ -42,7 +42,7 @@ pipeline {
 					def ri = images[(int)r]
 					def randomImage = env.DOCKER_REGISTRY + "/" + ri
 					def dockerOptions = "--privileged --ulimit core=0 --ulimit nofile=10240 " +
-						" -v /srv/jenkins:/srv/jenkins:rw -v /srv/cache:/srv/cache:rw " +
+						" --mount type=tmpfs,tmpfs-size=1g,dst=/tmp -v /srv/jenkins:/srv/jenkins:rw -v /srv/cache:/srv/cache:rw " +
 						" --entrypoint=''"
 					def bt = env.BUILD_TAG.replaceAll(/[^a-zA-Z0-9_.-]/, '-')
 					def outputdir = "tests/CI/output/Testsuite"

tests/CI/unittests.jenkinsfile

@@ -133,7 +133,7 @@ pipeline {
 					def randomImage = env.DOCKER_REGISTRY + "/" + ri;
 					def bt = env.BUILD_TAG.replaceAll(/[^a-zA-Z0-9_.-]/, '-')
 					def dockerOptions = "--privileged --ulimit core=0 --ulimit nofile=10240 " +
-						" -v /srv/jenkins:/srv/jenkins:rw -v /srv/cache:/srv/cache:rw " +
+						" --mount type=tmpfs,tmpfs-size=1g,dst=/tmp -v /srv/jenkins:/srv/jenkins:rw -v /srv/cache:/srv/cache:rw " +
 						" --entrypoint='' --name ${bt}-build"
 					def outputdir = "tests/CI/output/UnitTests"