test(derived): declare the real dependencies in the SAS tests

The test fixtures now state the inputs their expressions actually use:
LIBREF DSN, DERIVED_NOTE, PRIMARY_KEY_FIELD, and none for a literal-only
expression.  The getdata label assertion follows the new <VAR_NM>=<expr>
label.

sas/sasjs/macros/mpe_derived.test.sas

@@ -156,7 +156,7 @@ insert into &dclib..mpe_derived set
     ,libref='WORK'
     ,dsn='CLASS'
     ,var_nm='FLAG_DT'
-    ,var_dependencies='AGE'
+    ,var_dependencies=''
     ,var_type='N'
     ,var_len=8
     ,var_fmt='DATE9.'

sas/sasjs/services/editors/getdata.test.sas

@@ -258,7 +258,7 @@ insert into &dc_libref..mpe_derived set
     ,libref="%scan(&dclib..MPE_TABLES,1,.)"
     ,dsn="%scan(&dclib..MPE_TABLES,2,.)"
     ,var_nm='DERIVED_NOTE'
-    ,var_dependencies='STATE'
+    ,var_dependencies='LIBREF DSN'
     ,var_type='C'
     ,var_len=41
     ,var_fmt=''
@@ -270,7 +270,7 @@ insert into &dc_libref..mpe_derived set
     ,libref="%scan(&dclib..MPE_TABLES,1,.)"
     ,dsn="%scan(&dclib..MPE_TABLES,2,.)"
     ,var_nm='DERIVED_NOTE2'
-    ,var_dependencies='REGION STATE'
+    ,var_dependencies='DERIVED_NOTE'
     ,var_type='C'
     ,var_len=45
     ,var_fmt=''
@@ -350,7 +350,7 @@ run;
 
 data work.chk4b;
   set work.cols4;
-  where name='DERIVED_NOTE' and label=:'DERIVED:';
+  where name='DERIVED_NOTE' and label=:'DERIVED_NOTE=';
 run;
 %mp_assertdsobs(work.chk4b,
   desc=Test4 - derived column is labelled,

sas/sasjs/services/public/getcolvals.test.1.sas

@@ -52,7 +52,7 @@ insert into &dc_libref..mpe_derived set
     ,libref="%scan(&dclib..MPE_X_TEST,1,.)"
     ,dsn="%scan(&dclib..MPE_X_TEST,2,.)"
     ,var_nm='DERIVED_KEY'
-    ,var_dependencies='STATE'
+    ,var_dependencies='PRIMARY_KEY_FIELD'
     ,var_type='C'
     ,var_len=20
     ,var_fmt=''

sas/sasjs/services/public/validatefilter.test.sas

@@ -92,7 +92,7 @@ insert into &dc_libref..mpe_derived set
     ,libref="%scan(&dclib..MPE_TABLES,1,.)"
     ,dsn="%scan(&dclib..MPE_TABLES,2,.)"
     ,var_nm='DERIVED_NOTE'
-    ,var_dependencies='STATE'
+    ,var_dependencies='LIBREF DSN'
     ,var_type='C'
     ,var_len=41
     ,var_fmt=''