now nolog can be set in ansible.cfg and play levels also
Set the shell variable on the ssh connection type for accelerated mode

Fixes #8799
The correct option is password_file. Fixes #8752
Merge variables for hosts instead of updating in get_variables()
Make sure group_vars/all is loaded for ungrouped hosts

Fixes #6563
Convert boolean strings from set_fact to proper boolean values

Also adds integration tests for booleanification of strings

Fixes #8629
Fixing multiline parsing to preserve newlines

Fixes #8813
Fix quoting issues in lineinfile for individual single-quotes

Fixes #8806
Ensure checkmode is honored for templates that haven't changed

Fixes #8998
Ensure remote files are chmod'd properly for su/su_user too

Fixes #8594
Before decrypting check if vault password is set or error early

Fixes #8926
Fix #7711

Fix relative symlinks creation in file module

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Version bump for release 1.7.2
Removing symbolic mode tests, which are not in the 1.7.x branch
Include el7 mariadb support in mysql integration test
Correct mysql integration indentation
Merge tag 'v1.7.2' into maint1.7

New release 1.7.2
Revert "Disallow args: to be specified as a string"

This reverts commit 48b4805d771fdb7eccbadbc4a1468894f1968be8.
Merge branch 'no_more_log_1.7' into maint1.7
pass no_log when gather_facts.