Relax the install_requires, no need to exact version as long as there are no broken changes with future versions (#1530)

#### What I did
Fixes sonic-net/sonic-buildimage#7152

#### How I did it
Relax the install_requires

Author: qiluo-msft

setup.py

@@ -161,32 +161,32 @@
     },
     install_requires=[
         'click==7.0',
-        'click-log==0.3.2',
-        'docker==4.4.4',
-        'docker-image-py==0.1.10',
-        'filelock==3.0.12',
-        'enlighten==1.8.0',
-        'ipaddress==1.0.23',
-        'jinja2==2.11.3',
-        'jsondiff==1.2.0',
-        'jsonpatch==1.32.0',
-        'm2crypto==0.31.0',
-        'natsort==6.2.1',  # 6.2.1 is the last version which supports Python 2. Can update once we no longer support Python 2
-        'netaddr==0.8.0',
-        'netifaces==0.10.7',
-        'pexpect==4.8.0',
-        'poetry-semver==0.1.0',
-        'prettyprinter==0.18.0',
-        'pyroute2==0.5.14',
-        'requests==2.25.0',
+        'click-log>=0.3.2',
+        'docker>=4.4.4',
+        'docker-image-py>=0.1.10',
+        'filelock>=3.0.12',
+        'enlighten>=1.8.0',
+        'ipaddress>=1.0.23',
+        'jinja2>=2.11.3',
+        'jsondiff>=1.2.0',
+        'jsonpatch>=1.32.0',
+        'm2crypto>=0.31.0',
+        'natsort>=6.2.1',  # 6.2.1 is the last version which supports Python 2. Can update once we no longer support Python 2
+        'netaddr>=0.8.0',
+        'netifaces>=0.10.7',
+        'pexpect>=4.8.0',
+        'poetry-semver>=0.1.0',
+        'prettyprinter>=0.18.0',
+        'pyroute2>=0.5.14',
+        'requests>=2.25.0',
         'sonic-config-engine',
         'sonic-platform-common',
         'sonic-py-common',
         'sonic-yang-mgmt',
         'swsssdk>=2.0.1',
-        'tabulate==0.8.2',
-        'www-authenticate==0.9.2',
-        'xmltodict==0.12.0',
+        'tabulate>=0.8.2',
+        'www-authenticate>=0.9.2',
+        'xmltodict>=0.12.0',
     ],
     setup_requires= [
         'pytest-runner',