Allow arm/armlb/arm64 to run additional jobs

This improves stress test coverage and creates consistency with
other platforms.

The jobs:
```
tieredcompilation
forcerelocs
jitnosimd (will soon be interesting for ARM64)
heapverify1
gcstress0xc_zapdisable
gcstress0xc_zapdisable_jitstress2
gcstress0xc_zapdisable_heapverify1
gcstress0xc_minopts_heapverify1
```

Author: BruceForstall

netci.groovy

@@ -172,8 +172,8 @@ class Constants {
                // 'r2r_jitforcerelocs'
                // 'r2r_gcstress15'
                'minopts':                                ["MINOPTS_FAIL", "MINOPTS_EXCLUDE"],
-               // 'tieredcompilation'
-               // 'forcerelocs'
+               'tieredcompilation':                      [],
+               'forcerelocs':                            [],
                'jitstress1':                             ["JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
                'jitstress2':                             ["JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
                'jitstressregs1':                         ["JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
@@ -194,7 +194,7 @@ class Constants {
                'jitstress2_jitstressregs0x1000':         ["JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
                'tailcallstress':                         ["TAILCALLSTRESS_FAIL", "TAILCALLSTRESS_EXCLUDE"],
                // 'jitsse2only'                          // Only relevant to xarch
-               // 'jitnosimd'
+               'jitnosimd':                              [],    // Only interesting on platforms where SIMD support exists.
                // 'corefx_baseline'
                // 'corefx_minopts'
                // 'corefx_tieredcompilation'
@@ -211,19 +211,19 @@ class Constants {
                'gcstress0x3':                            ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE"],
                'gcstress0xc':                            ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE"],
                'zapdisable':                             ["ZAPDISABLE_FAIL", "ZAPDISABLE_EXCLUDE"],
-               // 'heapverify1'
-               // 'gcstress0xc_zapdisable'
-               // 'gcstress0xc_zapdisable_jitstress2'
-               // 'gcstress0xc_zapdisable_heapverify1'
+               'heapverify1':                            [],
+               'gcstress0xc_zapdisable':                 ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "ZAPDISABLE_FAIL", "ZAPDISABLE_EXCLUDE"],
+               'gcstress0xc_zapdisable_jitstress2':      ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "ZAPDISABLE_FAIL", "ZAPDISABLE_EXCLUDE", "JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
+               'gcstress0xc_zapdisable_heapverify1':     ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "ZAPDISABLE_FAIL", "ZAPDISABLE_EXCLUDE"],
                'gcstress0xc_jitstress1':                 ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
                'gcstress0xc_jitstress2':                 ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
-               // 'gcstress0xc_minopts_heapverify1'
+               'gcstress0xc_minopts_heapverify1':        ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "MINOPTS_FAIL", "MINOPTS_EXCLUDE"],
 
                //
                // NOTE: the following scenarios are not defined in the 'allScenarios' list! Is this a bug?
                //
 
-               'minopts_zapdisable':                     ["ZAPDISABLE_FAIL", "ZAPDISABLE_EXCLUDE", "TAILCALLSTRESS_FAIL", "TAILCALLSTRESS_EXCLUDE"],
+               'minopts_zapdisable':                     ["ZAPDISABLE_FAIL", "ZAPDISABLE_EXCLUDE", "MINOPTS_FAIL", "MINOPTS_EXCLUDE"],
                'gcstress0x3_jitstress1':                 ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
                'gcstress0x3_jitstress2':                 ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],
                'gcstress0x3_jitstressregs1':             ["GCSTRESS_FAIL", "GCSTRESS_EXCLUDE", "JITSTRESS_FAIL", "JITSTRESS_EXCLUDE"],