freemobile:// msg moved from GET parameters and into payload

[caronc]

Description:

Related issue (if applicable): #1090

Bugfix to move msg into payload (and out of kwarg GET parameters)

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• No lint errors (use flake8)
• 100% test coverage

Testing

Anyone can help test this source code as follows:

# Create a virtual environment to work in as follows:
python3 -m venv apprise

# Change into our new directory
cd apprise

# Activate our virtual environment
source bin/activate

# Install the branch
pip install git+https://github.com/caronc/apprise.git@1090-mobile-free-bugfix

# Test out the changes with the following command:
apprise -t "Test Title" -b "Test Message" \
  freemobile://user@password

[caronc]

@rabonarca would you mind giving this branch a try to see if it helps your situation?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.27%. Comparing base (cced5ed) to head (36393b1).

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1106      +/-   ##
==========================================
- Coverage   99.27%   99.27%   -0.01%     
==========================================
  Files         139      139              
  Lines       18029    18028       -1     
  Branches     3680     3680              
==========================================
- Hits        17899    17898       -1     
  Misses        121      121              
  Partials        9        9              

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[rabonarca]

@rabonarca would you mind giving this branch a try to see if it helps your situation?

With the changes I proposed it still didn't work.
As I had more time today for testing I managed to make it work by adding 'Content-Type': 'application/json' to the headers and keeping the msg in the payload.

[caronc]

Fixed in #1109