Move storage from features into mbed-os root directory

[rajkan01]

Summary of changes

We are going to soon migrate storage to below new directory structure

storage
├── blockdevice
│   ├── include
│   │   └── blockdevice
│   │       └── [...]
│   ├── source
│   │   └── [...]
│   ├── tests
│   ├── COMPONENT_DATAFLASH    // each component from components/storage/blockdevice
│   ├── COMPONENT_FLASHIAP
│   └── [...]
├── filesystem
│   ├── [....]
├── kvstore
│   ├── [....]
├── platform
│   ├── [....]

This PR Changes:

• Moved mbed-os/features/storage to mbed-os/storage
• Moved components/storage/blockdevice to storage/blockdevice/COMPONENT_xxx

Note:

• A further individual directory (A block device, filesystem etc.,) restructuring to be covered in separate activity and PRs.

Impact of changes

None.

Migration actions required

None.

Documentation

None.

---

Pull request type

[x] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

---

Test results

[] No Tests required for this change (E.g docs only update)
[x] Covered by existing mbed-os tests (Greentea or Unittest)
[x] Tests / results supplied as part of this PR

Manual testing: (Build for K64F target with ARMC6 toolchain)

• mbed-os-example-filesystem
• mbed-os-example-kvstore
• mbed-os-example-blockdevice
• Greentea tests: Full profile and Bare metal profile
• Unit tests build and run

---

Reviewers

@bulislaw @0xc0170 @ARMmbed/mbed-os-core

---

[ciarmcom]

@rajkan01, thank you for your changes.
@bulislaw @0xc0170 @ARMmbed/mbed-os-core @ARMmbed/mbed-os-storage @ARMmbed/mbed-os-maintainers please review.

[LDong-Arm]

Looks good to me, but we propose to move unit tests from the top-level UNITTESTS into individual libraries. This can happen in a future PR after we have finished refactoring libraries IMO.

A CI run would verify that we haven't missed anything here.

[jeromecoutant]

Could this correct #11993?

[rajkan01]

Could this correct #11993?

This PR will not solve this #11993 issue as just we moved one directory up from mbed-os/features/storage to mbed-os/storage and long path file extension issue should be fixed by @ARMmbed/mbed-os-tools

[evedon]

Good for a first PR.
UNITTESTS and greentea tests will be sorted in a subsequent PR.

[0xc0170]

CI started

[0xc0170]

I've noticed 100755 → 100644 changes in some files, was this intentional ? Looks like executable bit should not be set so fine.

File https://github.com/ARMmbed/mbed-os/blob/3f080dfd650fc9a97280c98742b1209185480383/storage/filesystem/littlefs/TESTS/util/clean.sh has it for instance, visible in the diff here on Github.

[mbed-ci]

Test run: SUCCESS

Summary: 6 of 6 test jobs passed
Build number : 1
Build artifacts