Dump Boulder logs on integration test failures. (#4442)

Might help debug #4363.

Also:

make "bash" vs "sh" explicit
move the paranoia flags (-ex) from the shebang into the body
add -u (fail on unset variables)
change _common to work with -u
remove some env vars that were no longer used
remove shebang from _common.sh because it's meant to be sourced, not run

tests/boulder-integration.sh

@@ -1,4 +1,4 @@
-#!/bin/sh -xe
+#!/bin/bash
 # Simple integration test. Make sure to activate virtualenv beforehand
 # (source venv/bin/activate) and that you are running Boulder test
 # instance (see ./boulder-fetch.sh).
@@ -8,12 +8,11 @@
 #
 # Note: this script is called by Boulder integration test suite!
 
+set -eux
+
 . ./tests/integration/_common.sh
 export PATH="$PATH:/usr/sbin"  # /usr/sbin/nginx
 
-export GOPATH="${GOPATH:-/tmp/go}"
-export PATH="$GOPATH/bin:$PATH"
-
 if [ `uname` = "Darwin" ];then
   readlink="greadlink"
 else
@@ -27,6 +26,14 @@ cleanup_and_exit() {
         echo Kill server subprocess, left running by abnormal exit
         kill $SERVER_STILL_RUNNING
     fi
+    # Dump boulder logs in case they contain useful debugging information.
+    : "------------------ ------------------ ------------------"
+    : "------------------ begin boulder logs ------------------"
+    : "------------------ ------------------ ------------------"
+    docker logs boulder_boulder_1
+    : "------------------ ------------------ ------------------"
+    : "------------------  end boulder logs  ------------------"
+    : "------------------ ------------------ ------------------"
     exit $EXIT_STATUS
 }
 

tests/integration/_common.sh

@@ -1,12 +1,7 @@
-#!/bin/sh
+# The -t is required on macOS. It provides a template file path for
-
+# the kernel to use.
-if [ "xxx$root" = "xxx" ];
+root=${root:-$(mktemp -d -t leitXXXX)}
-then
+echo "Root integration tests directory: $root"
-    # The -t is required on macOS. It provides a template file path for
-    # the kernel to use.
-    root="$(mktemp -d -t leitXXXX)"
-    echo "Root integration tests directory: $root"
-fi
 store_flags="--config-dir $root/conf --work-dir $root/work"
 store_flags="$store_flags --logs-dir $root/logs"
 tls_sni_01_port=5001