Merge ~ginggs/autopkgtest-cloud:big_packages-mkl-dnn into autopkgtest-cloud:master

[Graham Inggs]

Add mkl-dnn to big_packages on x86

diff --git a/worker-config-production/worker.conf b/worker-config-production/worker.conf
index 2d8f668..b00222a 100644
--- a/worker-config-production/worker.conf
+++ b/worker-config-production/worker.conf
@@ -16,7 +16,7 @@ releases = precise trusty xenial bionic disco eoan
 architectures = i386 amd64
 setup_command = $AUTOPKGTEST_CLOUD_DIR/worker-config-production/setup-canonical.sh
 setup_command2 = $CHECKOUTDIR/setup-commands/setup-testbed
-big_packages = binutils chromium-browser glibc libreoffice linux linux-* tdb firefox akonadi julia python-cryptography libtext-bidi-perl python-hypothesis nova rocs camitk kineticstools r-cran-igraph botch mathicgb ganeti lttng-modules python2.7 python3.6 python3.7 python3.8 python-ruffus openjdk-8 openjdk-lts nodejs cl-ironclad python-scipy cross-toolchain-base-mipsen 
+big_packages = binutils chromium-browser glibc libreoffice linux linux-* tdb firefox akonadi julia python-cryptography libtext-bidi-perl python-hypothesis nova rocs camitk kineticstools r-cran-igraph botch mathicgb ganeti lttng-modules python2.7 python3.6 python3.7 python3.8 python-ruffus openjdk-8 openjdk-lts nodejs cl-ironclad python-scipy cross-toolchain-base-mipsen mkl-dnn
 long_tests = gutenprint gmp-ecm open-iscsi diffoscope snapcraft cross-toolchain-base
 blacklist = bionic/i386/upstart bionic/amd64/upstart bionic/i386/libnih bionic/amd64/libnih bionic/i386/r-cran-vioplot bionic/amd64/r-cran-vioplot bionic/amd64/stress-ng bionic/i386/stress-ng disco/amd64/openjdk-lts bionic/i386/openjdk-lts disco/i386/openjdk-lts