Add bashate checks to pep8 step

Similarly to pep8 checks, this allows enforcing a consistent
style of the shell scripts accross modfications. For now
only the indentation is enforced to reduce code churn.

Closes-Bug: 1648099
Change-Id: Ie66cbe1aea4bd01a8bba8833ef6cbd2cff6a7c6a

cover.sh

@@ -53,10 +53,8 @@ echo "Allowed to introduce missing lines : ${ALLOWED_EXTRA_MISSING}"
 echo "Missing lines in master            : ${baseline_missing}"
 echo "Missing lines in proposed change   : ${current_missing}"
 
-if [ $allowed_missing -ge $current_missing ];
-then
-    if [ $baseline_missing -lt $current_missing ];
-    then
+if [ $allowed_missing -ge $current_missing ]; then
+    if [ $baseline_missing -lt $current_missing ]; then
         show_diff $baseline_report $current_report
         echo "We believe you can test your code with 100% coverage!"
     else

magnum/drivers/common/templates/fragments/configure-docker-storage.sh

@@ -33,8 +33,7 @@ fi
 $configure_docker_storage_driver
 
 if [ "$DOCKER_STORAGE_DRIVER" = "overlay" ]; then
-    if [ $(echo -e "$(uname -r)\n3.18" | sort -V | head -1) \
-         = $(uname -r) ]; then
+    if [ $(echo -e "$(uname -r)\n3.18" | sort -V | head -1) = $(uname -r) ]; then
         ERROR_MESSAGE="OverlayFS requires at least Linux kernel 3.18. Cluster node kernel version: $(uname -r)"
         echo "ERROR: ${ERROR_MESSAGE}" >&2
         sh -c "${WAIT_CURL} --data-binary '{\"status\": \"FAILURE\", \"reason\": \"${ERROR_MESSAGE}\"}'"

test-requirements.txt

@@ -6,6 +6,7 @@
 # ascii betical order.
 
 bandit>=1.1.0 # Apache-2.0
+bashate>=0.2 # Apache-2.0
 coverage>=4.0 # Apache-2.0
 doc8 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD

tox.ini

@@ -98,6 +98,13 @@ commands =
   doc8 -e .rst specs/ doc/source/ contrib/ CONTRIBUTING.rst HACKING.rst README.rst
   bash tools/flake8wrap.sh {posargs}
   bandit -r magnum -x tests -n5 -ll
+  bash -c "find {toxinidir}                 \
+      -not \( -type d -name .?\* -prune \)        \
+      -not \( -type d -name doc -prune \)         \
+      -not \( -type d -name contrib -prune \)     \
+      -type f                                     \
+      -name \*.sh                                 \
+      -print0 | xargs -0 bashate -v -iE006,E010,E042 -eE005"
 
 [testenv:venv]
 commands = {posargs}