Remove cvxpy cap

The bug in cvxpy 1.1.x that was breaking the aqua usage has been fixed
in the latest 1.1.3 release (see Qiskit/qiskit-aer#832 and
Qiskit/qiskit-aer#779 for more details). Since the bug is fixed we can
remove the version cap an enable newer versions of cvxpy to be
installed. Exclude rules are left on the setuptools extra requirement so
that end users don't accidently try to use a version known not to run.

.travis.yml

@@ -130,7 +130,7 @@ jobs:
         - sudo apt-get -y install hunspell-en-us
         - pip install pyenchant
         - pip install cplex
-        - pip install "cvxpy>1.0.0,<1.1.0"
+        - pip install "cvxpy>1.0.0"
         - pip install https://github.com/rpmuller/pyquante2/archive/master.zip --progress-bar off
       script:
         - pip check
@@ -148,7 +148,7 @@ jobs:
       if: tag IS blank
       python: 3.8
       install:
-        - pip install "cvxpy>1.0.0,<1.1.0"
+        - pip install "cvxpy>1.0.0"
         - pip install https://github.com/rpmuller/pyquante2/archive/master.zip --progress-bar off
       script:
         - make lint
@@ -174,7 +174,7 @@ jobs:
             - aqua137.dep
       before_script:
         - pip install cplex
-        - pip install "cvxpy>1.0.0,<1.1.0"
+        - pip install "cvxpy>1.0.0"
         - export PYTHON="coverage3 run --source qiskit/aqua,qiskit/chemistry,qiskit/finance,qiskit/ml,qiskit/optimization --omit */gauopen/* --parallel-mode"
       script:
         - stestr --test-path test/aqua run --blacklist-file selection.txt 2> >(tee /dev/stderr out.txt > /dev/null)
@@ -190,7 +190,7 @@ jobs:
           paths: aqua138.dep
       python: 3.8
       before_script:
-        - pip install "cvxpy>1.0.0,<1.1.0"
+        - pip install "cvxpy>1.0.0"
       script:
         - stestr --test-path test/aqua run --blacklist-file selection.txt 2> >(tee /dev/stderr out.txt > /dev/null)
         - python tools/extract_deprecation.py -file out.txt -output aqua138.dep
@@ -205,7 +205,7 @@ jobs:
             - aqua237.dep
       before_script:
         - pip install cplex
-        - pip install "cvxpy>1.0.0,<1.1.0"
+        - pip install "cvxpy>1.0.0"
         - export PYTHON="coverage3 run --source qiskit/aqua,qiskit/chemistry,qiskit/finance,qiskit/ml,qiskit/optimization --omit */gauopen/* --parallel-mode"
       script:
         - stestr --test-path test/aqua run --whitelist-file selection.txt 2> >(tee /dev/stderr out.txt > /dev/null)
@@ -221,7 +221,7 @@ jobs:
           paths: aqua238.dep
       python: 3.8
       before_script:
-        - pip install "cvxpy>1.0.0,<1.1.0"
+        - pip install "cvxpy>1.0.0"
       script:
         - stestr --test-path test/aqua run --whitelist-file selection.txt 2> >(tee /dev/stderr out.txt > /dev/null)
         - python tools/extract_deprecation.py -file out.txt -output aqua238.dep

setup.py

@@ -86,7 +86,7 @@
     extras_require={
         'torch': ["torch; sys_platform == 'linux' or (python_version < '3.8' and sys_platform != 'win32')"],
         'cplex': ["cplex; python_version >= '3.6' and python_version < '3.8'"],
-        'cvx': ['cvxpy>1.0.0,<1.1.0'],
+        'cvx': ['cvxpy>1.0.0,!=1.1.0,!=1.1.1,!=1.1.2'],
         'pyscf': ["pyscf; sys_platform != 'win32'"],
     },
     zip_safe=False