GH-2570 - LDAP auth error: can't decode byte 0xc3 (#2622)
GH-2570 - LDAP auth error: can't decode byte 0xc3 (#2622)

* HUE-2570 Apply smart_str to ldap group name

* HUE-2570 Apply smart_str to ldap username_pattern

Co-authored-by: Harsh Gupta <fbd98321222fc87f9385e62fe1910bb84500a310@users.noreply.github.com>
Co-authored-by: Mahesh Balakrishnan <d1d3de4220f6cdaf730c1ed0dfe8d6fb212c3d40@cloudera.com>
cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue