empty-values & use new yaml-files setting
* Semi-automated using https://github.com/myii/ssf-formula/pull/27 * Fix errors shown below: ```bash nginx-formula$ yamllint -s . ./pillar.example 146:56 error empty value in block mapping (empty-values) 147:76 error empty value in block mapping (empty-values) 148:59 error empty value in block mapping (empty-values) 150:22 error empty value in block mapping (empty-values) 151:39 error empty value in block mapping (empty-values) 152:39 error empty value in block mapping (empty-values) 153:39 error empty value in block mapping (empty-values) ```
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