refs #8817 - Revert "fixes #5841 - use inner query when retrieving reports for subset of authorised hosts"

This reverts commit ecdb85a84915954f312889ba51a9b35de86cd38c.

fixes #9118 - host mailer should not fail if no owner set for host

(cherry picked from commit 699433930fe80c905b757ae951a5aaa1952f0e9f)

Conflicts:
test/unit/host_mailer_test.rb

Fixes #9231 - Require English lib and fix ENC failure

(cherry picked from commit 350a0417951ebff465cda10645eae5c1dedae2cc)

fixes #9274 - hostgroup#clone clones config groups

(cherry picked from commit 6a07eb8155e82dcd7b22b2b41e05cb2233e8f52a)

fixes #8565 - only get unique, unused message/source IDs to speed up expiry

(cherry picked from commit 9fde85ad830031d38a6786d30a48519344dad446)

fixes #5812 - url parameter in compute_resource#create is not required for EC2, removing the required flag

(cherry picked from commit 06c8a10ebcfe2bf2e61fa4a047d1002abe90cbbf)

Fixes #6884 - Installation media without $minor generate broken $version

$version is generated with the major version and a dot, producing paths
like foo.bar/x64/7. which don't exist. For CentOS at least we want to generate
a path without the dot. The default values for these media have been changed too....

Fixes #8052 - allows erb in array and hash params

(cherry picked from commit f8a56f5bd809305080e4ba69113f73f65957a3f9)

Fixes #9044 - fixes invalid mac in tests

Also do not reset invalid mac address to nil so we can propagate proper
validation error.

(cherry picked from commit ee1f56de6b2bdca4dfd104b99ec25340bfb51aaa)

fixes #8739 - use global setting when hostgroup root_pass is blank

A blank (not nil) root_pass on hostgroups was preventing correct inheritance
from settings in both hosts and nested hostgroups.

root_pass was also being copied from parents/settings to hostgroups when they...