Storage Module Basis (#13)

* Added storage module, base structs, getDevices() func, taskGetStorageDevices (ticks every 30)

* GetDevices now returns a complete description w/ disk partitions

* Added InUse flag to Device, fixed logic bugs

* Added disk space usage for partitions in use by the system

* Cleanup

* Added UsageStat and UsageSplit filling for in use devices

* Changed value of lsblk block usage output to bytes

* Cleanup, small fixes

* Added ExecAndGetLines util func

* Added explicit detection of disk or part block type, ignoring non-suppoorted devices

* Added command line tool dependencies for the project in README file

* Added comment to func ExecAndGetLines

* Removed GetMySQLDbConnectionDetails()

* Added tests to utils module

* Fix invalid argument type for Exec family of tests

* Removed too much verbosity from utils.GetPath when no env file is available, added new argument (path) to Exec family of funcs

* Added new path argument to utils.Exec... test

* Fixed TestExec

* Added spaces trim to Exec result

* Trimming spaces and newlines from result of Exec

* Better visibility for test result log of TestExec

* Added ExampleExecAndStream test

* Added Example tests with failure status for ExecAndStream

* Added branch to test for valid key in GetPath

* Added missing t.Fail() statements in utils_test.go

* Added storage_test.go file, smoke test

* TestGetDevices

README.md

@@ -42,15 +42,16 @@
 <!-- TABLE OF CONTENTS -->
 ## Table of Contents
 
-* [About the Project](#about-the-project)
-  * [Built With](#built-with)
-* [Getting Started](#getting-started)
-  * [Prerequisites](#prerequisites)
-  * [Installation](#installation)
-* [Usage](#usage)
-* [Roadmap](#roadmap)
-* [Contributing](#contributing)
-* [License](#license)
+- [Table of Contents](#table-of-contents)
+- [About The Project](#about-the-project)
+  - [Built With](#built-with)
+- [Getting Started](#getting-started)
+  - [Prerequisites](#prerequisites)
+  - [Installation](#installation)
+- [Usage](#usage)
+- [Roadmap](#roadmap)
+- [Contributing](#contributing)
+- [License](#license)
 
 
 
@@ -88,6 +89,14 @@ sudo apt-get install docker docker-compose
 
 Check the following links for more info on [Docker](https://www.docker.com/) and [Docker Compose](https://docs.docker.com/compose/).
 
+Aditionally, edgeboxctl needs the following bash commands available wherever it runs:
+* `sh`
+* `rm`
+* `systemctl`
+* `lsblk`
+* `yq`
+* `tinc-boot` _(not mandatory)_
+
 ### Installation
 
 1. Clone the repo