Fix continuation indentation in restconf UTs

According to our java style guide, when line-wrapping, each line after
the first (each continuation line) is indented at least +4 from the
original line.

Format RestconfSchemaServiceTest and ParserIdentifierTest according to
that.

Change-Id: Iac8ad245624c6d4a2bc2df635517d8c7d5d80fef
Signed-off-by: Jakub Morvay <jmorvay@frinx.io>