Enable gating on E123

Enables gating on the check for 'closing bracket does not match
indentation of opening bracket's line' and fixes current violations.

Change-Id: I68241404e8fa19e758c9712f5009ed6c6a1ad979
Enable gating on E124

Enable gating on the check for 'closing bracket does not match visual
indentation' and fix existing violations.

Change-Id: I5e66aaafa370bb33b7a3bebba2c07d11e370f337
Enable gating on E126

Enable the check for 'continuation line over-indented for hanging
indent' and fix existing violations.

Change-Id: I02aa6ab9f3e36d5194ef1ae4a80872ddf63eb9fe
Enable gating on E127

Enables gating on 'continuation line overindented for visual indent' and
fixes existing violations.

Change-Id: I1ba4cc8108409f73080303c55a0e233a3505e1db
Enable gating on E128

Enables check for 'continuation line under-indented for visual indent'
and fixes existing violations.

Change-Id: Iac5d6ac280199b7b7f3877d252777e92726f8361
Merge "Enable gating on E123"
Merge "Enable gating on E124"
Merge "Enable gating on E126"
Merge "Enable gating on E127"
Merge "Enable gating on E128"