Merge branch 'release_2.3' into devel

* release_2.3: (54 commits)
  Upgrade changelog for 2.3
  Purge superlance
  Purge an old supervisor config
  Require chris-lea libzmq3
  Use the htpasswd command, not the module
  Fix a playbook syntax error for postgres
  Ensure postgres is started earlier in setup role
  Allow customizing npm path
  Include RPM-GPG-KEY-ansible-release for all releases
  Simplify GPG keys
  Correct broken RPM-GPG-KEY
  Use gpg --passphrase for signing CHECKSUM
  Handle rpm --addsign pasphrase prompts
  Adding docker-compose development workflow
  Fix license in spec file.
  Updates to selinux policy for some munin plugins
  ansible 1.8.4 requires sudo:true when using sudo_user
  Fix expect script timeout
  Disable timeout and correct sign.exp error
  Fix expect script hang
  ...

tools/scripts/sign.exp

@@ -0,0 +1,49 @@
+#!/usr/bin/expect -f
+#
+# Helper script to respond to passphrase prompts from the gpg command.
+#
+
+# Disable timeout
+set timeout -1
+
+# Optionally print usage message
+if {[llength $argv] <= 0} {
+  puts "Usage: sign.exp <command>"
+  exit 1
+}
+
+# Process arguments
+set command [join $argv]
+
+if { [info exists env(PASSPHRASE) ] } {
+   set passphrase $env(PASSPHRASE)
+} else {
+   set passphrase ""
+}
+
+# Run the desired command
+spawn {*}$command
+expect {
+    -nocase "enter passphrase:" {
+        send -- "$passphrase\r"
+        exp_continue
+    }
+    -nocase "enter pass phrase:" {
+        send -- "$passphrase\r"
+        exp_continue
+    }
+    timeout {
+        puts "expect timeout"
+        exit 1
+    }
+    eof { }
+}
+
+lassign [wait] pid spawnid os_error_flag retval
+
+if {$os_error_flag == 0} {
+    puts "exit status: $retval"
+} else {
+    puts "errno: $retval"
+}
+exit $retval