Integrate version hardcoding into CLI

The get_distribution load was very heavy, so follow the other parts and
just hardcode the version in. Also update bump-version to work with this
and with the new pyproject.toml configuration, and add a custom
user-agent to the API requests leveraging this version.

client-cli/pvc/cli/cli.py

@@ -51,6 +51,8 @@ import click
 ###############################################################################
 
 
+VERSION = "0.9.107"
+
 CONTEXT_SETTINGS = dict(
     help_option_names=["-h", "--help"], max_content_width=MAX_CONTENT_WIDTH
 )
@@ -97,10 +99,7 @@ def version(ctx, param, value):
     if not value or ctx.resilient_parsing:
         return
 
-    from pkg_resources import get_distribution
-
-    version = get_distribution("pvc").version
-    echo(CLI_CONFIG, f"Parallel Virtual Cluster CLI client version {version}")
+    echo(CLI_CONFIG, f"Parallel Virtual Cluster CLI client version {VERSION}")
     ctx.exit()
 
 

client-cli/pvc/lib/common.py

@@ -27,6 +27,7 @@ from requests import get, post, put, patch, delete, Response
 from requests.exceptions import ConnectionError
 from time import time
 from urllib3 import disable_warnings
+from pvc.cli.cli import VERSION
 
 
 def format_bytes(size_bytes):
@@ -166,6 +167,9 @@ def call_api(
         config["api_scheme"], config["api_host"], config["api_prefix"], request_uri
     )
 
+    # Add custom User-Agent header
+    headers["User-Agent"] = f"pvc-client-cli/{VERSION}"
+
     # Craft the authentication header if required
     if config["api_key"]:
         headers["X-Api-Key"] = config["api_key"]