Add auto inference of host scheme in CLI (#2240)

* Add auto inference of host scheme in CLI

* update changelog

CHANGELOG.md

@@ -30,6 +30,7 @@ filters and searching the nearest frame without any annotations (<https://github
 - Nuclio became an optional component of CVAT (<https://github.com/openvinotoolkit/cvat/pull/2192>)
 - A key to remove a point from a polyshape [Ctrl => Alt] (<https://github.com/openvinotoolkit/cvat/pull/2204>)
 - Updated `docker-compose` file version from `2.3` to `3.3`(<https://github.com/openvinotoolkit/cvat/pull/2235>)
+- Added auto inference of url schema from host in CLI, if provided (<https://github.com/openvinotoolkit/cvat/pull/2240>)
 
 ### Deprecated
 -

utils/cli/core/core.py

@@ -182,8 +182,13 @@ class CVAT_API_V1():
     """ Build parameterized API URLs """
 
     def __init__(self, host, https=False):
-        prefix = 'https' if https else 'http'
-        self.base = '{}://{}/api/v1/'.format(prefix, host)
+        if host.startswith('https://'):
+            https = True
+        if host.startswith('http://') or host.startswith('https://'):
+            host = host.replace('http://', '')
+            host = host.replace('https://', '')
+        scheme = 'https' if https else 'http'
+        self.base = '{}://{}/api/v1/'.format(scheme, host)
 
     @property
     def tasks(self):