yin parser: BUGFIX: parsing error-message and error-app-tag elements
yin parser: BUGFIX: parsing error-message and error-app-tag elements

Instead of <text> sub-element, these statements have <value> sub-element.

PavolVican/libyang,PavolVican/libyang,lukasmacko/libyang,PavolVican/libyang,PavolVican/libyang,lukasmacko/libyang,PavolVican/libyang