878: solution for requests dependency version collision in amundsendatabuilder module (#891)

Signed-off-by: iamtodor <todor.ilya@gmail.com>

docs/installation.md

@@ -23,6 +23,7 @@ The following instructions are for setting up a version of Amundsen using Docker
    ```bash
     $ python3 -m venv venv
     $ source venv/bin/activate
+    $ pip3 install --upgrade pip
     $ pip3 install -r requirements.txt
     $ python3 setup.py install
     $ python3 example/scripts/sample_data_loader.py