chore(iast): improve microbenchmarks accuracy [backport 2.21] (#13179)

Backport #13160 to 2.21

- remove `loops` and `value` config from appsec_iast_aspects/config.yaml
and use the default values
- split `appsec_iast_aspects` into smaller steps due to the default
values returns timeout in the CI
- Fix exception in `appsec_iast_propagation/scenario.py`
```
 File "/app/benchmarks/.venv_baseline/lib/python3.9/site-packages/pyperf/_runner.py", line 494, in task_func
    return time_func(loops, *args)
  File "/app/benchmarks/bm/_scenario.py", line 64, in _pyperf
    run(loops)
  File "/app/benchmarks/scenario.py", line 99, in _
    launch_function(self.iast_enabled, func, self.internal_loop, caller_loop)
  File "/app/benchmarks/scenario.py", line 81, in launch_function
    tainted_value = new_request(enable_propagation)
  File "/app/benchmarks/scenario.py", line 75, in new_request
    taint_pyobject_with_ranges(tainted, (CHECK_RANGES[0],))
  File "/app/benchmarks/scenario.py", line 41, in taint_pyobject_with_ranges
    set_ranges(pyobject, tuple(ranges))
ValueError: iast::propagation::native::error::Tainted Map isn't initialized
Traceback (most recent call last):
```
## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met 
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

Author: avara1986

benchmarks/appsec_iast_aspects/config.yaml

@@ -26,23 +26,6 @@
     "ljust_aspect",
     "lower_aspect",
     "modulo_aspect",
-    "ospathbasename_aspect",
-    "ospathdirname_aspect",
-    "ospathjoin_aspect",
-    "ospathnormcase_aspect",
-    "ospathsplit_aspect",
-    "ospathsplitdrive_aspect",
-    "ospathsplitext_aspect",
-    "re_expand_aspect",
-    "re_findall_aspect",
-    "re_finditer_aspect",
-    "re_fullmatch_aspect",
-    "re_group_aspect",
-    "re_groups_aspect",
-    "re_match_aspect",
-    "re_search_aspect",
-    "re_sub_aspect",
-    "re_subn_aspect",
     "replace_aspect",
     "repr_aspect",
     "rsplit_aspect",

benchmarks/appsec_iast_aspects/functions.py

@@ -0,0 +1,55 @@
+ospathbasename_aspect: &ospathbasename_aspect
+  warmups: 1
+  function_name: "iast_ospathbasename_aspect"
+
+ospathbasename_noaspect:
+  <<: *ospathbasename_aspect
+  function_name: "ospathbasename_noaspect"
+
+ospathdirname_aspect: &ospathdirname_aspect
+  warmups: 1
+  function_name: "iast_ospathdirname_aspect"
+
+ospathdirname_noaspect:
+  <<: *ospathdirname_aspect
+  function_name: "ospathdirname_noaspect"
+
+ospathjoin_aspect: &ospathjoin_aspect
+  warmups: 1
+  function_name: "iast_ospathjoin_aspect"
+
+ospathjoin_noaspect:
+  <<: *ospathjoin_aspect
+  function_name: "ospathjoin_noaspect"
+
+ospathnormcase_aspect: &ospathnormcase_aspect
+  warmups: 1
+  function_name: "iast_ospathnormcase_aspect"
+
+ospathnormcase_noaspect:
+  <<: *ospathnormcase_aspect
+  function_name: "ospathnormcase_noaspect"
+
+ospathsplit_aspect: &ospathsplit_aspect
+  warmups: 1
+  function_name: "iast_ospathsplit_aspect"
+
+ospathsplit_noaspect:
+  <<: *ospathsplit_aspect
+  function_name: "ospathsplit_noaspect"
+
+ospathsplitdrive_aspect: &ospathsplitdrive_aspect
+  warmups: 1
+  function_name: "iast_ospathsplitdrive_aspect"
+
+ospathsplitdrive_noaspect:
+  <<: *ospathsplitdrive_aspect
+  function_name: "ospathsplitdrive_noaspect"
+
+ospathsplitext_aspect: &ospathsplitext_aspect
+  warmups: 1
+  function_name: "iast_ospathsplitext_aspect"
+
+ospathsplitext_noaspect:
+  <<: *ospathsplitext_aspect
+  function_name: "ospathsplitext_noaspect"