test: fix expected-actual parameters in require.Equal

[alexandear]

This PR fixes the order of parameters in assert.Equal/require.Equal statements. According to the doc, the first parameter is expected, the second is actual.

It is planned to change the order of assertion arguments to more natural (actual, expected) in v2 of testify.

[ccoVeille]

It is planned to change the order of assertion arguments to more natural (actual, expected) in v2 of testify.

Well, testify v2 is on hold
stretchr/testify#1089 (comment)

[ccoVeille]

Thanks for fixing this

Dix you use testifylint to detect them?