RF: use pip install datalad[devel]@git+https:... to install all test depends

Author: yarikoptic

.github/workflows/build-macos.yaml

@@ -390,10 +390,7 @@ jobs:
             commitish="${{ matrix.version }}"
           fi
           python -m pip install --upgrade pip
-          pip install git+https://github.com/datalad/datalad@${commitish}
-
-      - name: Install nose et al (just in case!)
-        run: pip install nose vcrpy mock
+          pip install datalad[devel]@git+https://github.com/datalad/datalad@${commitish}
 
       - name: WTF!?
         run: datalad wtf

.github/workflows/build-ubuntu.yaml

@@ -392,10 +392,7 @@ jobs:
             commitish="${{ matrix.version }}"
           fi
           python -m pip install --upgrade pip
-          pip install git+https://github.com/datalad/datalad@${commitish}
-
-      - name: Install nose et al (just in case!)
-        run: pip install nose vcrpy mock
+          pip install datalad[devel]@git+https://github.com/datalad/datalad@${commitish}
 
       - name: WTF!?
         run: datalad wtf

.github/workflows/build-windows.yaml

@@ -387,10 +387,7 @@ jobs:
             commitish="${{ matrix.version }}"
           fi
           python -m pip install --upgrade pip
-          pip install git+https://github.com/datalad/datalad@${commitish}
-
-      - name: Install nose et al (just in case!)
-        run: pip install nose vcrpy mock
+          pip install datalad[devel]@git+https://github.com/datalad/datalad@${commitish}
 
       - name: WTF!?
         run: datalad wtf

.github/workflows/template/build-{{ostype}}.yaml.j2

@@ -635,10 +635,7 @@ jobs:
             commitish="${{ matrix.version }}"
           fi
           python -m pip install --upgrade pip
-          pip install git+https://github.com/datalad/datalad@${commitish}
-
-      - name: Install nose et al (just in case!)
-        run: pip install nose vcrpy mock
+          pip install datalad[devel]@git+https://github.com/datalad/datalad@${commitish}
 
       - name: WTF!?
         run: datalad wtf